Latest TCS Aptitude Question SOLUTION: how many 4 digit number are there that do not have 3 and 6 digit

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how many 4 digit number are there that do not have 3 and 6 digit

Asked In TCS vishal kumar singh (10 years ago)

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sandy  (10 years ago)

ans:3584
consider 4 blanks _ _ _ _
1st blank can be filled in 7c1 ways (0,3,6 are neglecetd)
2st blank can be filled in 8c1 ways (0 considered along with 1,2,4,5,7,8,9)
3st blank can be filled in 8c1 ways
4st blank can be filled in 8c1 ways
therefore total 4 digit num without 3 and 6 is 7*8*8*8=3584

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Arpit Srivastava  (10 years ago)

7*8*8*8=3584

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Sruthi s kumar  (10 years ago)

3584
7*8*8**=3584

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BABU SAHEB JANA  (10 years ago)

1000->9999:with out any 3 and 6 is:3584

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bhagyashri mandlik  (10 years ago)

how can u consider repitetion is allowed

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nikhil pande  (10 years ago)

9*8*8*8=4608

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