Hey guys! What is your favorite school subject?

In #10 I got thought that 3+1=4 ;4×3=12 12+1=13 ;13×3=39 39+1=40 ;40×3=120 120+1=121 ;121×3=363!!!! And Yes This Is My Age!!!! 👇

Usually real good at math, but this one was kind of tough. Some were not completely math related

A Strange thing! In 2 questions, my answer was correct but my logic and the answer's logic wasn't same.

3:24 you can do 26 times 2 it more easy

This actually taught me new math lessons because I never saw them before, so thanks!

TIMESTAMPS Riddle #1. What is the missing number? 0:37 Riddle #2. Take a look at these four rhombuses. what's the missing number? 1:18 Riddle #3. Can you determine the pattern and figure out what the missing number is in the last circle? 2:18 Riddle #4. One triangle has all its number in place, but other two miss the numbers on top. Can you guess them? 3:25 Riddle #5. Study the figure below. What number, in your opinion, is missing here? 4:23 Riddle #6. One of the numbers in the bottom “arrow” is missing. What's the missing number? 5:20 Riddle #7. Four lines of numbers. What number should be in the place of the question mark? 6:24 Riddle #8. What number is missing here? Test your skills once again! 7:35 Riddle #9. Look carefully at this picture, Sherlock. Your task is simple - try to find the missing number. 8:40 Riddle #10. 3, 12, 39, 120, and...? What is the next number in this line? 9:47

I used different methods but still got the correct answer on #8 and #4. On #8, this is what I saw and used, initially, for the steps: A) Multiply first by whatever the the sum of second+1 is B) Add the original second to the result and you get the third. Went back afterwards and figured that In algebra, with X, Y, and Z to represent the first, second, and third numbers, respectively. So in all three given cases you have: x y z Now, using my method of multiplying x by y+1, then adding y, we get: x(y+1) + y = z This works for all of them, try it. 6(4+1) + 4 = 34 (because 6x5 = 30, then add 4 for 34) 8(5+1) + 5 = 53 (8x6 is 48, add 5 for 53) 11(3+1) + 3 =47 (11x4 is 44, add 3 for 47) 9(2+1) + 2 = 29 (9x3 is 27, 27+2 is 29) I was shocked when their method was different at first, but then I realized, funnily enough, this formula of mine is merely the simplified form of the formula they have given you in the video. They say multiply first and second, then add the sum of the first and the second to the product to get the third. Using X for first, Y for second, and Z for third again, you get: xy + x + y = z For instance, as they said, 6x4 + 6 + 4 = 34. (Since 6x4 is 24, 6+4 is 10, and 24+10 = 34) Of course, xy+x is the same thing as x(y+1). Which is why both formulas work. Furthermore, now that I look at it I realize that you could also solve this problem a third way, by creating the formula y(x+1) + x = z. Since y(x+1) gives you xy+y it's easy to see where this comes from. That would mean you'd multiply the second number by the sum of the first and 1, and then add the first. So to use the example number sequence of 6, 4, and 34, we get: 4(6+1) + 6 = 34 Which holds true since 4x7 is 28, and 28+6 is 34. Pretty cool how that all works out the same! (if you're a math geek like me). Try it with the other two sets yourself if you don't believe me. Now for #4. There are at least five ways to do this, I found. Initially, I actually started with the largest number (the one in the lower right hand corner of the triangle), subtracted the number on the lower left, then added the top number. It worked on all of them too and got me to 10 and 4 for the missing numbers. In Algebra, that would go like this, using x for the number outside the triangle, a for the top number, b for the lower left hand corner, and c for the lower right hand corner. Or: x a b c So: c-b+a=x Remember you have to go left to right with addition and subtraction for this one to work. Again, this formula works for all of them. Try it. 7-4+3 = 6 (7-4 is 3, 3+3 is 6) 9- 4+5 = 10 (9-4 is 5, 5+5 is 10) 4-2+2= 4 (4-2 is 2, 2+2 is 4) Hm. That's not what they said to do to get the answer, though. They said to take the top number (a), add the lower right hand number (c), and subtract the lower left hand number (b), For instance, 3+7-4=6. So their formula would be: a+c-b=x Let's see if you can get this formula from mine. If you take my formula of c-b+a=x and subtract a from both sides, we have c-b=x-a. Now let's simply add a back to both sides and viola! You get their formula. a+c-b=x. Easy peasy. I promised there were three other ways to solve #4. One is very complicated and I doubt if anyone would see it just by looking at the numbers since it involves negative integers. The other two - especially the last - were so easy I was kicking myself for having gone to all this trouble, after finding it. So, first up, the complex solution. If we do another rearranging of the letters we can get them in alphabetical order and have a-b+c=x. This will work for all three groups as well but it involves negatives in the first of the three cases. Again, always go left to right to make it work. Examples: 3-4+7 =6 (3-4 is (-1), 7+(-1) is 7-1, 7-1 is 6) 5-4+9=10 (5-4 is 1, 9+1 is 10) 2-2+4=4 (2-2 is 0, 0+4 is 4) Now wait a minute. Something sneaky is hidden here. Because it's human nature to want to use all three given numbers, we miss two hidden solutions that don't use all the numbers but are much easier than what we've been running around trying to do. And they also can be explained algebraically. Let's take my formula of c-b+a = x again and look hard at the numbers involved in it. 7-4+3 = 6 (7-4 is 3, 3+3 is 6) 9- 4+5 = 10 (9-4 is 5, 5+5 is 10) 4-2+2= 4 (4-2 is 2, 2+2 is 4) Did you catch it? C-b and a are the same number! 7-4 is 3, but a is also 3. 9-4 is 5, but a is also 5. And so on. Therefore: c-b=a So inserting this into our original formula, we can look at this two ways. The first involves getting rid of A altogether and replacing it with the (c-b) it's equal to: (c-b) + (c-b)=x 2(c-b) =x Or, basically, subtract b from c and double the difference. This works in all three cases. 2(7-4) =6 2(9-4) = 10 2 (4-2) = 4 That's a LOT easier, but the fifth method will make you kick yourself, as I did myself, when you realized all of this could have been bypassed by noting on the first triangle that twice 3 is 6. Or, algebraically: 2a=x That's right, you don't have to use b or c at all. You can simply get the correct answers by knowing your 2 times table. 2x3=6 2x5=10 2x2=4 How do you get that from our original formula of c-b+a=x? Easy peasy. Remember I said c-b = a? I just do this: c-b=a, (c-b)+a=x, a+a=x, 2a=x If you read all the way to the end of this you're probably kicking yourself right now, and also you're probably a math geek/pattern lover like me. God Bless! :-)

I’m terrible at maths

9:18 6+8+3 does not equal 15; neither will 7+2+4. Swapping 6 and 4 improves the logic only marginally, as not all vertical lines add up to 15. A better approach to this problem is to note that the number in the middle square (5) is equidistant from the numbers on either side of it in any given row; you still get 2 as your answer for the missing entry, but the logic is now made sound.

#09 6+8+3 and 7+2+4 do not equal 15, so do not mark them. 9/10 solved

I got them all (a couple took more than 15 seconds, I admit) but the weird thing is that in about half of them, I arrived at the number in a completely different way. For example, on #9, I followed the lines from the outside through 5 in the middle to arrive at a number figured on the right-hand side. The "pattern" went 6-5=1, 8-5=3, 9-5=4 then all that was left that wasn't used by subtracting 5 was 7 (even though the answer would be at the bottom rather than on the right), so 7-5=2. 2 turned out to be the correct answer, but that is NOT how I got it. The others were similar. I guess I just think in a unique way.

Whaaat, on question #09. I thought 2 because the numbers were: 1, ?, 3, 4, 5, 6, 7, 8, 9. It was correct answer but wrong solution!

this is logic not math

well, that was easy. The only one I personally had some problems with was the one with the triangles as there wasn't enough information to validate a possible answer. In the end I simply went with doubling the inner top number - which is effectively the same as the answer provided in the video.

Riddle #10 can also be solved by another method 3+3² = 3 + 9 = 12 12+3³ = 12+27 = 39 39 + 3⁴ = 39 + 81 = 120 120 + 3^5 = 120 + 243 = 363

BRIGHT side just reminded me HOW IT FEELS TO SCRATCH MY HEAD.

Number 4. When there is only one example, you can't say that it is a pattern.

For #06 number 11 can be the answer for another reason: Multiply the number on the top and number on the bottom and you get the doubled middle number. It works for every given example

I got 4 out 10 but i was thinking more than 15 seconds. The true mathematicians need more time to solve any case;)

for number 4, I multiplied the top by 2 and still got the same answers.

I got 9/10

The last solution for me was to pick the n position, add one from the previous number and multiply by 3. 3(3+1)=12 3(120+1)=363

in riddle#9 i just counted 1-9 and 2 is literally the missing number, i got it all correctly and timely though

The number 4 one can also be done by just multiplying the number on the top of the triangle by 2 it will get us the same answer as well

THUMBNAIL ANSWER;- 3X3+3=12, 12x3+3=39,39x3+3=120, 120x3+3=363.

For number 10, I thought this: 3+1=4, 4*3=12. Adding 1 to the number and then multiplying it by 3. 12+1=13; 13*3=39. 39+1=40; 40*3=120. 120+1=121; 121*3=363

10:20 I did (3+1)*3=12. Same thing works for the other numbers. (120+1)*3=363.

I got the answer in #10 3x3=9 9+3=12 12x3=36 36+3=39 39x3=117 117+3=120 120x3=360 360+3=363

In the last riddle I just added one to the previous number and multiplied it with three to get the next number, somewhat similar to what you did 😅😅😅

Question five could have a lot of answers because it doesn’t have enough triangles to ensure what the pattern is

On #4, I did (x*y*z)/(x+y+z). For 3,4,7, I divided the product (84) into the sum (14) and got 6. So for the second triangle I divided 2*2*4 (16) by 2+2+4 (8) for 2. For the bottom I divided 5*4*9 (180) into 5+4+9 (18) for 10.

In the 4th riddle, I thought that multiplying the number below the question mark with 2 is the answer, and what a coinsidence, it is😜😜😜

I'm good at Maths 😁 I got 8/10 correct 😊

2. Answer 2 is correct Because 7x6. 42 ,, 9x9..81,,then 6x2..12

I solved #04 with "3+4=7" and "7-1=6" so the other ones were "5+4=9-1=8" and "2+2=4-1=3". #08 I solved way easier(to me!) than described and still got the same result. 34-4:6=5, so 4+1=5. 53-5=48:8=6, so 5+1=6 again and 47-3=44:11=4, again 3+1=4. Therefore 9*3=27+2=29 (reverse way from what I did before, means 29-2=27:9=3, so 2+1=3). #09 seems to be a only half true assumption. 7+4+2=13 and not 15. This solution of 2 only works if you think about the "1,2,3,4,.." or if you say that only the connected numbers always give 15. Not like what you did with the red circles and saying "each line" in that sense.

I GOT ALL OF THEM RIGHT!! I guess I really am very good at math! 😂😂😂😂😂😂😂😂 Edit:(I did some of them a different way but still got the same answer like #3 you can just double it)

when I first saw the title I said _"bad"_ anyone else?

I did not count how many I got right - but it was most of them. However, I discovered one thing - I almost always arrived at the right answer by a method other than the one given. Therefore, it means that there is definitely more than one way of arriving at the correct answer.

#04 it also could be multiply all the numbers each triangule and divide the add of all of them For example: (3*4*7)÷(3+4+7)= 6 And the others will be: (2*2*4)÷(2+2+4)= 2 And (5*4*9)÷(5+4+9)= 10

Q1 Dosen't Make Sense! Wow!!! How Did I... Didn't Know I Got Tricked In April Fools...

👍🏼👌🏻👍🏼👌🏻Your Channel is very entertaining & Good, Knowledgebel👍🏼🙏🏻I Always Enjoy 😊. PRACTICE❗️PRACTICE God bless you From 🇩🇰 (5.3.14)

Mr. Bright Side, I like your videos. They entertain me a lot. The puzzles and riddles are often too easy. Could you please make videos with a bit more advanced puzzles now and then? Thank you for all your hard work.

I Am able to solve all of the puzzle easily

Practice practice practice... Then get tired and sleep😅

8 out 10

Maths is perfect. So many ways for same answer depending.on how your brain works. Love it. I am doing tgis at 5:55am. I didn't sleep last night cos i had a day off work and slept all day!!

#9 u can add opposite sides(line connected) and then divide by 2 to get 5 so the answer would be 2--> (8+2)÷2=5

I FIGURED OUT THE THUMBNAIL QUESTION!!!!!! IT WAS SOOOOO EASY (for me)

For the nineth question I just use the 1st question trick and get the ans🤣🤣

I got all correct except for the one with the "rhombuses" (those weren't rhombuses; they were just squares oriented diagonally).

For number 4 I did it different. I subtracted the bottle numbers and then multiplied the answer by 2.

I don't have to do this test because I already know I am terrible at maths.

For 9, I also realize that 6 and 4 had the same difference with 5, as did 3 and 7. So I guess the secret number must be three less than 5, since 8 is equal to three more. 5-3=2 Can we talk about the fact that these riddle have nothing to do with math? It's luck;you just have to find the right pattern.

For number 9, I thought it had to be pairs of numbers when added or subtracted gives 5. Using this rule, I still got the correct answer.

I solved the all problems, except 2nd and 7th

For the last riddle you could have done the nth term which would be the difference between 3 and 12 which is 9 and the difference between 12 and 39 which is 27 and the difference between 39 and 130 is 81 and the numbers are 9,27 and 81 and if you, x 9 by 3 it gives 27 and if you x 27 by 3 it gives 81 so you have to do 81 x 3 which gives 243 and you just have to add 243 to 120 and it gives 363

my poor brain for math

I did #09 a different way but I still got it right. Good enough for me.

For the last one, let's take U0=3 for all positive integers n we have Un+1=3*Un+3. We have : U1=3*Uo+3=3*3+3=9+3=12 U2=3*U1+3=3*12+3=36+3=39 U3=3*U2+3=3*39+3=117+3=120 So : U4=3*U3+3=3*120+3=360+3=363

thumbnail: answer 363

1 solved 8 except 1 and 2 and i used my own trick in last 10 ques of 3,12,39,120 my trick is 3×4=12,after 12 next no. is 13 so 13×3=39,after 39 next no is 40, 40×3=120,after 120 its 121 121×3=363

These are less Maths - more fun puzzles !

For riddle no. 4, other logical answer could be 2 on the vortex of 2nd triangle and 6 on the vortex of 3rd triangle. First multiply the three digits in each triangle and then find their sum. Divide the product with the sum. The result is the number on the vortex of that triangle

Math is my favourite lason

Dude Im so bad at math! Anyone else with me?

4:17 Me being lazy and just did this: 2x2=4 5x2=10 It's correct tho

For #4 I guessed 4 and 10 correctly, but my explanation is easier: double the number in the top corner of the triangle. :)

I only got the first one right 😭😭😭😭

Are you good or bad in maths ???

Number 10: 39(3rd number)devided by 3(1st number)=13;120:12=10;with this logic the missing number is 39x7(why 7?because 13-10=3 and to keep this difference between the factors we have to do 10-3,that's equal to 7),and 39x7=273. And with this I'm not saying that I think correctly and who made this video does not, I'm just saying that I think you should consider this way to solve it. If you got to this point thank you for your attention and tell me what you think

Last qustion 12-3=9=3*3 39-12=27=3*9 120-39=81=3*27 Answer 3*81=243 Add 120+243=363 3,12,39,120,363

I love your videos sooo much very knowledgeleble

*Hey everyone* 👍

I got number 4 correct, although for the wrong reason. I saw that 7 - 3 = 4 , 4 - 2 = 2 , 9 - 4 = 5 , so basically the bottom numbers always equaled the top numbers. And since there was a 6 over the 3 I came to the conclusion that the top numbers of each triangle double every time.

Puzzle 4 can be solved with numerous other answers because there is only one completed series. The question in puzzle 4 does not limit the answer in any way. In puzzle 2, you needn't use the word "rhombus" because the figures are squares. They are set on point, but still are squares.

Who else likes the cartoon man

anyone else here bad at math?

For the last puzzle just add powers of 3 to the numbers 3+3^2=12 , 12+3^3=39 , 39+3^4=120 , 120+3^5=363

#9, i’m so lucky, i answer the same number which is 2, simply because the numbers are sequential from 1 to 9, and only number 2 is missing..

I have more SOLUTION to get the correct answer in #3 13×2 = 26 26 × 2 = 52

52nd viewer

If you needed to count to infinity,you count forever and if you count fast and another counts slow then the numbers will never be the same.only more different.And If the keep being bigger than each other,then infinity can be different sizes. I just solved an huge debate and I’m only fricking 10...

This is not a maths test this is a creativity test🤨

💯 liker

I got all the CORRECT ANSWERS HOW BRAINY IS ME😎

This isn't math. It's recognizing patterns.

I like math a lot, but a very tough math riddle blows my mind. I was only able to get 4/10

1st Cool

I'm got 7 correct and very happy as I am only 14 years old now 😊😊

#10- the difference between 3 and 12 is 9. Multiply that with original 3 and get 27. Add that to 12 and you get 39. Take previous difference 27 x 3= 81 then add 39=120. Take 81x3+120=363. I'm terrible at math but can see patterns.

#05)50 +40=90 therefore 20 +30+10=60+30=90

9:43 You cm also identify the answer is 2 by the patterns of the numbers. Look closely at the lines: Line 1. 6, 5, 4 (repeated decrementing) Line 2. 9, 5, 1 (repeated subtracting by 4) Line 3. 7, 5, 3 (repeated subtracting by 2) So line 4 must be 8, 5, 2 (repeated subtracting by 3)

I was very close on the thumbnail question 3 12 39 120 my guess was 390 my logic was that 3 is 1 + 2 so 12 12 is 3 + 9 so 39 although I guess that's where my logic fell apart I was just assuming it would continue to scale like that basically however I was still pretty close because 363 is 3 + 6 + 3 which is 12

I got around 8 right .. though i paused and took some extra time for thinking

Riddle 9: 8 hits 5 and 3 is the out put that can can be seen on the top right (8-5=3), 6-5=1 (the answer cam be seen on the right), 9-5=4 (bottom right), and Finally 7-5=2 (buttom)

Ive got all the riddles right

4:22 I get 3 and 8 because in the correct triangle the answer is (4+3=7)-1=6 so (2+2=4)-1=3 and (4+5=9)-1=8

BRIGHT SIDE: you have only 15 seconds me : never

I figured out the thumbnail in only 4 seconds. Each term is 3(X+1), where X is the previous term. 363 is the answer