100+ Maths IQ Questions with Answers Pdf - 1

Ans: 6

The number in the first triangle is arrived at by adding the numbers at the top. ie 6 + 3 + 8 = 17.
Similarly, 7 + 8 + 9 = 24, and
2 + 3 +1 = 6.

Ans: 67

Each number is obtained by adding together the digits of the previous number to the previous number. 67 = 56 + 5+ 6.

Ans: 42

As you go down, double the previous number and subtract 10.

Ans: 24

27 + 21 = 48;
4 x 6 = 24;
48 - 24 = 24.

Ans: 61

(7 x 9) - (3 x 4) + 10 = 61.