If A means +, B means -, C means × and D means ÷, then what will come in place of the question mark (?) in the following equation?
21 D 7 C 4 A 10 B 13 = ?
1
10
2
8
3
9
4
11
If A means +, B means -, C means × and D means ÷, then what will come in place of the question mark (?) in the following equation?
21 D 7 C 4 A 10 B 13 = ?