What number should replace the question mark?

What number should replace the question mark?

A 18

B 68

C 81

D 44

Solution

Correct Answer: Option B

For the first triangle:

8 * 4 = 32 + 7 = 39

For the second triangle:

6 * 3 = 18 + 9 = 27

For the third triangle:

9 * 7 = 63 + 5 = 68