Which two numbers (not digits) and which two signs should be interchanged to make the following equation correct?
24 ÷ 3 × 2 + 8 - 18 = 21
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 3, 8 and -, +.
Given expression: 24 ÷ 3 × 2 + 8 - 18 = 21
Option 4) 3, 8 and -, +
After interchanging numbers and sign,
⇒ 24 ÷ 8 × 2 - 3 + 18 = 21
⇒ 3 × 2 - 3 + 18 = 21
⇒ 6 - 3 + 18 = 21
⇒ 24 - 3 = 21
⇒ 21 = 21