1. 

If 'a' represents ÷, 'b' represents +, 'c' represents -, and 'd' represents x, then
24 a 6 d 4 b 9 c 8 = ?

A. 20
B. 19
C. 6
D. 17

Answer: Option D

Explanation:

Given, ? = 24 a 6 d 4 b 9 c 8

 ? = 24 ÷ 6 x 4 + 9 - 8

 ? = 24/6 x 4 + 9 - 8

 ? = 4 x 4 + 9 - 8

 ? = 16 + 9 - 8

 ? = 25 - 8  ? = 17