SSC GD 2019 PYQ — Question 88

SSC GD Constable (English) - 18 Feb 2019 Shift 2 • Reasoning • Q88

Find out the two signs to be interchanged to make the following equation correct.

25 + 25 × 25 - 25 ÷ 25 = -599

Show answer & explanation

Correct answer: B

Explanation

The correct answer is option 2 i.e. × and ÷.

Understanding

Given Equation: 25 + 25 × 25 - 25 ÷ 25 = 599

Check all the options:

Option 1: + and ×

After replacement the equation becomes;

=  25 × 25 + 25 - 25 ÷ 25

=  649 is not equal to -599.

Hence, option 1 is not the correct answer.

Option 2: × and ÷

After replacement the equation becomes;

=  25 + 25 ÷ 25 - 25 × 25

=  -599 is equal to -599.

Hence, option 2 is the correct answer.

Option 3: - and ×

After replacement the equation becomes;

=  25 + 25 - 25 × 25 ÷ 25

=  25 is not equal to -599.

Hence, option 3 is not the correct answer.

Option 4: - and ÷

After replacement the equation becomes;

= 25 + 25 × 25 ÷ 25 - 25

= 25 is not equal to -599.

Hence, option 4 is not the correct answer.