If M denotes '-', N denotes '÷', O denotes '×', and P denotes '+', then what will come in place of '?' in the following equation?
21 O 5 P 69 N 3 P M 88 =?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 55.
Given conditions: M denotes '-', N denotes '÷', O denotes '×', and P denotes '+
Given the equation: 21 O 5 P 69 N 3 P M 88 =?
After interchanging the expression becomes:
= 21 × 5 + 69 ÷ 3 + - 88
= 105 + 23 + - 88
= 105 + 23 + 15 - 88
= 143 - 88
= 55