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Question

5*2 is a three digit number with * as a missing digit. If the number is divisible by 6, the missing digit is.

(a) 2
(b) 3
(c) 6
(d) 7

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Solution

(a) 2
A number divisible by 6 must also be divisible by 3 as 6 is a multiple of 3.
Sum of the given digits = 5 + 2 = 7
We know that multiple of 3 greater than 7 is 9.
∴ 9 − 7 = 2
Therefore, the required digit is 2.

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