Math Puzzle Will Test Your Brain Power

The answer is 41.

The trick involves multiplying the two numbers together, and then subtracting the difference between the second and first number from that product.

Here is the pattern applied to each row:

• 2 + 3 = 5: (2 × 3) – (3 – 2) = 6 – 1 = 5

• 3 + 7 = 17: (3 × 7) – (7 – 3) = 21 – 4 = 17

• 4 + 5 = 19: (4 × 5) – (5 – 4) = 20 – 1 = 19

• 5 + 8 = 37: (5 × 8) – (8 – 5) = 40 – 3 = 37

Following this exact rule for the final equation:

• 6 + 7 = ?: (6 × 7) – (7 – 6) = 42 – 1 = 41

(Note: Another perfectly valid way to solve this is to multiply the second number by one less than the first number, then add the first number back in. For example: (6 – 1) × 7 + 6 = 35 + 6 = 41).