By interchanging the given two signs which of the following equation will be not correct?
– and ÷
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 20 × 8 – 4 ÷ 2 + 7 = 50.
Given condition: – and ÷
Option 1: 20 × 8 – 4 ÷ 2 + 7 = 50
After interchanging the expression becomes:
20 × 8 ÷ 4 - 2 + 7 = 50
20 × 2 - 2 + 7 = 50
40 - 2 + 7 = 50
45 = 50