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Combination with Restrictions

A five digit ...

Question

A five digit number divisible by 30 is to be formed using the digits 0,1,2,3,4,5 without repetition of the digits. The number of ways it can be done is :

A

36

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B

24

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C

48

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D

60

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Solution

The correct option is B
24

Last digit is zero and the remaining from digits are 1,2,4,5. Number of arrangements = 4! =24

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