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A 4 digit number made of digits 1,2,3,4,...

A 4 digit number made of digits 1,2,3,4,5 is wirtten down at random without repetition. The probability that the number so formed is divisible by 6 is

A

`1//20`

B

`1//10`

C

`3//20`

D

`3//10`

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The correct Answer is:
B
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