If ‘A’ stands for ‘÷’, ‘B’ stands for ‘×’, ‘C’ stands for ‘+’, and ‘D’ stands for ‘−’, what will come in place of the question mark (?) in the following equation?
55 B 5 D 13 B 2 C 14 A 7 D 15 B 5 C 102 A 2 C 15 = ?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 242
Given the equation: 55 B 5 D 13 B 2 C 14 A 7 D 15 B 5 C 102 A 2 C 15 = ?
= 55 × 5 − 13 × 2 + (14 ÷ 7) − 15 × 5 + (102 ÷ 2) + 15
= (55 × 5) − (13 × 2) + 2 − (15 × 5) + 51 + 15
= 275 − 26 + 2 − 75 + 51 + 15
= 343 - 26 - 75
= 242