By interchanging the given two signs and numbers which of the following equation will be correct?
+ and –, 2 and 4
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 7 × 4 – 2 ÷ 1 + 5 = 13.
Given conditions: + and –, 2 and 4
Option 2: 7 × 4 – 2 ÷ 1 + 5 = 13
After interchanging the expression becomes:
7 × 2 + 4 ÷ 1 - 5 = 13
7 × 2 + 4 - 5 = 13
14 + 4 - 5 = 13
18 - 5 = 13
13 = 13