If ‘A’ denotes ‘+’, ‘B’ denotes ‘×’, ‘C’ denotes ‘–’ and ‘D’ denotes ‘÷’, then what will come in place of ‘?’ in the following equation?
21 A 34 C 6 B (72 D 9) A 13 B 1 + (56 D 4) = ?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 34.
Given the equation: 21 A 34 C 6 B (72 D 9) A 13 B 1 + (56 D 4) =?
After interchanging the expression becomes:
= 21 + 34 − 6 × (72 ÷ 9) + 13 × 1 + (56 ÷ 4)
= 21 + 34 − 6 × 8 + 13 × 1 + 14
= 21 + 34 − 48 + 13 + 14 = 34