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 B4 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.