1000+ Math Puzzles Brain Teasers with Answers - 1

Ans: 131.

The center number is the sum of the squares of the outer numbers.

131 = 1², + 7² + 9 ²

Ans: 27 and 10

3 x 9 = 27 and 8 + 2 = 10.

Ans: 53

5 + 1 = 6
3 + 6 = 9
Similarly 4 + 4 = 8
7 + 2 = 89 and
3+ 2 = 5
2 + 1 = 3

Ans: 35

Numbers advance in steps of 7, 8, 9 and 10.

Ans: 729

Each number is doubled and then 7 is added to make the next.