Question

If 15 # 3 = 9; 10 # 2 = 4; 2 # 20 = 8; then find the value of 2 # 25 = ?
1. 5
2. 10
3. 27
4. 9

Answer 1

Correct Answer - Option 2 : 10

The Logic here is as follows:

15 # 3 = 9

15 × 3 = 45 × 2 = 90 = 90 ÷ 10 = 9.

10 # 2 = 4

10 × 2 = 20 × 2 = 40 = 40 ÷ 10 = 4.

2 # 20 = 8

2 x 20 = 40 × 2 = 80 = 80 ÷ 10 = 8.

Similarly,

2 # 25 = ?

2 × 25 = 50 × 2 = 100 = 100 ÷ 10 = 10.

Hence, the correct answer is "10".