Which two signs and two numbers (not digits) should be interchanged in the following equation to make it correct?
19 ÷ 14 + 7 × 2 × 4 = 80
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 4 and 19; + and ÷.
Given equation: 19 ÷ 14 + 7 × 2 × 4 = 80
Option 1: 4 and 19; + and ÷
After interchanging the expression becomes:
4 + 14 ÷ 7 × 2 × 19 = 80
4 + 2 × 2 × 19 = 80
4 + 76 = 80
80 = 80