1000+ Math Puzzles Interview Questions with Answers - 1

Ans: 16

16 in both lines

7 × 4 = 28 and 2 × 8 = 16

Similarly

4 × 9 = 36 and 3 × 6 = 18.

Ans: 24

Looking across and down, the final number in each row and column is the sum of the fist three numbers.

Ans: 8

The number at the top is the square root of the number formed by the two digits at the bottom, ie $$√ 81$$ = 9.

Ans: 2

6 × 7 = 42

Ans: 607

× 3 + 1 at each stage