SarkariPYQ

SSC CGL 2019 PYQ — Question 82

SSC CGL Tier II Quant - 11/09/2019 • Quantitative Aptitude • Q82

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Let x = (633)24 - (277)38 + (266)54. What is the unit digit of x?

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Correct answer: D

Explanation

The correct answer is option 4 i.e. 8.

x = (633)24 - (277)38 + (266)54

is of the form

x = 34x - 74x + 2 + 6

x = 1 - 9 + 6

x = 7 - 9    [17 - 9] for unit digit

x = 8