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. 7 × 2 + 27 ÷ 9 – 4 = 18.
Given equation: – and ×
Option 1: 7 × 2 + 27 ÷ 9 – 4 = 18
After interchanging the expression becomes:
7 - 2 + 27 ÷ 9 × 4 = 18
= 7 - 2 + 3 × 4
= 7 - 2 + 12
= 19 - 2
= 17
17 is not equal to 18.