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Question

What is the value of x such that 221x is divisible by 6?

A
4
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B
3
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C
1
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D
5
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Solution

The correct option is B 4
We know the divisibility rule for 6:
If the number is exactly divisible by both 2 and 3, then the given number is also divisible by 6.
For a number to be divisible 2, it should end with an even digit.
Here, 2+2+1=5
So, 4 is added to 5+4=9
Hence, 2214 is divisible by 6 because the last digit ends with even no. and the number is multiple of 3.
So, option A is correct.

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