Latest MBA Aptitude Question SOLUTION: How many 6 digit numbers can be formed using 1 to 6 without repetition, such that number will be divisible to its unit place digitNeed help

1) 402
2) 528
3) 64

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(#M40016163) MBA question permutations and combinations, probability Keep an EYE

How many 6 digit numbers can be formed using 1 to 6 without repetition, such that number will be divisible to its unit place digitNeed help

1) 402
2) 528
3) 648
4) 720

Asked In MBA (11 years ago)

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Balaji Akash Kumar  (11 years ago)

the numbers will end with 1,2,3,4,5,6
the numbers made with last digit as 1 is
5*4*3*2*1=120
similarly for 6 digits is
120*6=720
but in case of 4 the number is not divisible when it is 14,34,54
those combinations are 4*3*2*1=24*3=72(bcoz 14,34,54 (3) combinations)
720-72=648
ans is 648

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