Question

If 6 * 4 = 40 and 8 * 3 = 33, then 5 * 6 = ?

• A. 64
• B. 70
• C. 68
• D. 66

Answer 1

Answer:

D. 66

A pattern that fits both examples is:

a * b =$ab + b^2 = b(a+b)$

Now calculate:

5 * 6 = $5 \times 6 + 6^2 = 30 + 36 = 66$