By interchanging the given two signs which of the following equation will be not correct?
+ and –
I. 18 ÷ 3 + 8 × 5 – 4 = 20
II. 6 + 8 × 9 ÷ 3 – 4 = 14
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. Both I and II.
Given signs: + and –
I. 18 ÷ 3 + 8 × 5 – 4 = 20
By interchanging the given two signs:
18 ÷ 3 - 8 × 5 + 4 ⇒ 6 - 40 + 4 = 10 - 40 = -30 ≠ 20
II. 6 + 8 × 9 ÷ 3 – 4 = 14
By interchanging the given two signs:
6 - 8 × 9 ÷ 3 + 4 ⇒ 6 - 24 + 4 = 10 - 24 = -14 ≠ 14