SSC CGL Tier-2 01-December-2016 Maths Question 3

Question 3

f the sum of the digits of a three digit numberis subtracted from that number, then it will always be divisible by

Solution

Let the three digit number be xyz.

(100x + 10y +z) -(x + y +z) = 99x - 9y , which is divisible by both 3 and 9.

So, the answer would be option c)both 3 and 9



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