Question : Directions: Which two numbers should be interchanged to make the given equation correct?
1 × 4 + 3 – 5 = 6
Option 1: 4 and 5
Option 2: 3 and 6
Option 3: 5 and 3
Option 4: 1 and 5
Correct Answer: 5 and 3
Solution :
Given:
1 × 4 + 3 – 5 = 6
Replace the given numbers in the options one by one with the original numbers in the given equation.
First option:
4 and 5
⇒ 1 × 5 + 3 – 4 = 6
= 5 – 1
= 4 ≠ 6
Second option:
3 and 6
⇒ 1 × 4 + 6 – 5 = 3
= 4 + 1
= 5 ≠ 6
Third option:
5 and 3
⇒ 1 × 4 + 5 – 3 = 6
= 4 + 2
= 6 = R.H.S.
Fourth option:
1 and 5
⇒ 5 × 4 + 3 – 1 = 6
= 20 + 2
= 22 ≠ 6
So, only the third option satisfies the R.H.S. of the given equation. Hence, the third option is correct.
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