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SSC Selection Post 2019 PYQ — Question 68

SSC Selection Post - Graduation Level 2019 - 16 Oct 2019 • Quantitative Aptitude • Q68

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If x+9y is divisible by 5, where x and y are integers, then what is the remainder when 8x + 7y is divided by 5?

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Correct answer: D

Explanation

The correct answer is Option 4 i.e.0

Given x + 9y  is divisible by 5, let x = y = 1 
1 + 9 × 1=10, divisible by 5.

Now check 8x + 7y
8 × 1 + 7 × 1 = 15 , divisible by 5.

So, remainder is 0.