By interchanging the given two signs and numbers which of the following equation will be correct?
+ and –, 7 and 6
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 4 × 7 + 6 – 3 ÷ 1 = 20.
Given condition: + and –, 7 and 6
Option 1: 4 × 7 + 6 – 3 ÷ 1 = 20
After interchanging the expression becomes:
4 × 6 - 7 + 3 ÷ 1 = 20
4 × 6 - 7 + 3 = 20
20 = 20.