Which two numbers (not digits) and which two signs should be interchanged to yield the value ‘zero’ for the following expression?
13 + 65 ÷ 2 × 8 – 21
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. + and ÷; 13 and 65.
Given expression: 13 + 65 ÷ 2 × 8 – 21
Option 1) + and ÷; 13 and 65
= 65 ÷ 13 + 2 × 8 – 21
= 5 + 2 × 8 – 21
= 5 + 16 - 21
= 21- 21 = 0