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Question 43

If 213x27 is divisible by 9, then the value of x is 0.


Solution

False
Given, 213x27 is divisible by 9, so sum of its digits is also divisible by 9.
i.e. 2 + 1 + 3 + x + 2 + 7 = 0, 9, 18, 27, 36,....
x + 15 = 0, 9, 18, 27, 36, ....
x + 15 = 18              [ x is digit of a number] 
x = 3

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