### Question

**Can you solve this puzzle?**

9 = 90

8 = 72

7 = 56

6 = 42

3 = ?

9 = 90

8 = 72

7 = 56

6 = 42

3 = ?

A. 18

B. 12

C. 9

D. 27

Answer: B. 12

**Solution:**

In the equation, the formula is X * (X + 1)

9 = 9 * (9 + 1) = 90

8 = 8 * (8 + 1) = 72

7 = 7 * (7 + 1) = 56

6 = 6 * (6 + 1) = 42

**3 = 3 * (3 + 1) = 12**

The Answer is **12.**

**Read more:**

**Can you solve this number puzzle 9 + 8 = 117, 16 + 13 = 329, 19 + 11 = 830, 23 + 18 = ??**

**If 17 + 17 = 2895, 18 + 18 = 3245, 19 + 19 = 3615 then 23 + 23 = ?**