Find the unknown number in math puzzles

Find the missing number in math puzzles:

Question 1: Find the next number in the series:

This series is logical. Its logic is simple. The series follows as: 14, 28, 20, 40, 32, 64, ….

We need to find the next number in the series.

The series starts with 14, next number in the series is twice the first number i.e. 28, third number in this series is previous number - 8

i.e. 28 – 8 = 20

We repeat as: 20 + 20 = 40

40 – 8 = 32

Repeat again:

32 + 32 = 64

Now we need to find the missing number which is previous number – 8.

Hence,

64 – 8 = 56

Hence 56 is the missing number.

Answer = B. 56

Question 2: Find the missing number:

Find unknown number in math puzzles

This question is pretty straight forward because it can be solved with logic. You need to find a perfect square of every number in the series. Hence we start from left, 1 is encircled & it is a perfect square of 1. Proceeding in clockwise direction, in the triangular pattern, we find 4 which is a perfect square of 2. Further proceeding in clockwise direction will take us to 9 which is a perfect square of 3. So it shows that we need to find a perfect square of number series starting from 1. We can guess the next number in the series would be 16 & it is a perfect square is 4.

So our answer is 16. Now we are going to prove whether we are right or wrong by following the same pattern.

Solve math triangle puzzle

This question shows us a path that we should follow. When we follow the arrow then we find our next number is 25 which is a perfect square of 5. Following number is 36, square of 6. 49 comes after which is a square of 7. Then we see 64, which is a square of 8. Final number in the number series is 81 which is a square of 9 & then we reach 1 again. Hence this question shows that we need to find square of every number in clockwise direction, in a triangular pattern.

Correct Answer: 16