Which two numbers (not the digits of the numbers) and two signs should be interchanged to make the given equation correct?
24 ÷ 8 + 2 − 7 × 32 = 170
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 24 and 32; + and −.
Given equation: 24 ÷ 8 + 2 − 7 × 32 = 170
Option 1) 24 and 32; + and −.
After interchanging the signs and numbers, we get
⇒ 32 ÷ 8 − 2 + 7 × 24 = 170
⇒ 4 − 2 + 7 × 24 = 170
⇒ 4 − 2 + 168 = 170
⇒ 172 − 2 = 170
⇒ 170 = 170