Want to sharpen your mind and your problem-solving skills? Put your math, creativity and critical-thinking skills to the test with our newest brain teaser!

Were you able to solve it? Click here to double check your answer. Let us know how you did in the comments!

11

11

I got it!! Fun

60+15/15 = 5

17+7/3 = 8

111+10/11 = 11

111 + 10 = 121 / 11 = 11

My answer was right.

I added the two top numbers then divided it by the bottom number.

Answer is 11

bottom number times the middle number minus the left most number.

Truly a brain teaser. I was tempted to give up, but after a few minutes the answer jumped out at me.

I did solve the problem, finding the missing number to be 11. I did it a bit differently though. In grid 1, I went with (5 x 15) – 60 = 15. Grid 2, (8 x 3) – 7 = 17. Thus, grid 3 gave us (X x 11) – 10 = 111. Solving for X = 111 + 10 / 11. X = 11. The missing number in grid 3 is 11.

Good One. Got it but it was challenging

I eyeballed the answer a different way: Middle number times bottom number minus top left number equals top right number.

I’m stumped but interested.

I correctly solved the number triangles but not the same way as communicated in your answer. My solution is that the middle number multiplied by the bottom number minus the top left number equals the top right number. So 10 plus 111 equals 121. 121 divided by 11 is 11.

I got it right!

I multiplied the bottom # by X, the unknown, then subtracted the top left number to get the top right number. Trial and error til I got the right one LoL

I was able to get #11!

Got it!

Nice

Although I did get the answer, I much prefer logical puzzles in which you can deduce the answer, rather that a puzzle such as this in which you go through an endless list of mathematical associations until you get the correct combination.

My answer was correct/

I always like trying these just to prove to myself I’m not as smart as I think I once was

Fun – 11

Got it!! Bottom number times center minus right side number equals left side.

Solved it!

The result of the question mark = 11

Took about a minute to clear away the cobwebs but the answer became pretty obvious after that.

Or…

15×5-15=60

3×8-7=17

So then

11×11-10=111

Got it!

I figured out that the numbers in the middle were exactly 3 numbers higher than the one before the current one. The number for the ? Is 11.

I nailed it right away. When I took vocational tests so long ago, mathematician was on my list

My answer is 11 but I didn’t check

I did it slightly different – middle time lower number minus upper left equaled upper right 5*15-15=60 5*3-17=7 11*11-111=10

It was a straight forward math problem; not necessarily complicated.

11 is my answer

I solved for 11 a different way. Middle number times bottom number minus upper left equals upper right.

I managed to get the correct number after staring at the grids for a couple minutes.

it is 11 top 2 numbers divide by bottom number equals center number

IE….15+60=75 75/15=5

IE….17+7=24 24/3=8

IE….111+10=121 121/11=11

How about bottom number times center number minus the larger top number equals the other top number in each of the three puzzles (15×5 75-60=15) (3×8 24-17=7) (11×11 121-111=10). Worked for me in this case

11

111+10=121

11*11=121

So the number is 11

I am very strong in math … I tutored Statistics, Algebra, and other classes in college in the early 90s but I do not see patterns … I have never been familiar with this type of math. My 28 year old grandson is a whiz at them … he also has the math gene ha. I am 75 years old and a female. Thanks.

There is another relationship. The number on the upper right must be reachd by subtracting the number on the upper left from the product of the other two numbers.

11

Center number times bottom number, subtract number on left, equals number on top right.

I had middle # x bottom # minus top left # equals top right #

11

1

That was fun. I got it right.

It took a while, but I got there.

11 The sum of the top 2 numbers equals multiplying the bottom and middle number.

11

Got it!

Took a bit but figured it out. Fun math!

I solved it.

I solved the puzzle a different way. I looked at the pattern of each number in the center and realized that it increased by three, therefore, eight plus three equals 11!

Good exercise for my insomnia. Thank you.

11… add the two top divided by the bottom = the center

Got it! I would have gotten it quicker if I had started with the 2nd diagram. Good puzzle! Thanks.

11

11

Two easy

Solved it

relatively easy to solve.

The middle number x the bottom number – number in upper right equals number in upper left. Solution take 111 add 10 divide by 11 means middle number is 11.

Answer to puzzle is (11)

I was able to figure it out in a minute.

11

Now I know why I’m broke🤓 But at least I can spell my name frontwards and backwards without too much trouble☺️

Got it ,,,,

I got it right !!!!!