How many no.exactly have 2,3,4,5,6,7 digits
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hi friend,
the numbers having exactly the digits 2,3,4,5,6,7 can be of a 6- digited number
_ _ _ _ _ _
the first blank has a chance of getting 6numbers.while the second blank has a chance of getting 5 numbers.,3rd blank-4 numbers,4th blank--3 numbers ,5th blank --2 numbers ,6th blank --1 number ( if repeatation is not allowed)
<>so,no.exactly have 2,3,4,5,6,7 digits are 6!=720
I hope this will help u ;)
the numbers having exactly the digits 2,3,4,5,6,7 can be of a 6- digited number
_ _ _ _ _ _
the first blank has a chance of getting 6numbers.while the second blank has a chance of getting 5 numbers.,3rd blank-4 numbers,4th blank--3 numbers ,5th blank --2 numbers ,6th blank --1 number ( if repeatation is not allowed)
<>so,no.exactly have 2,3,4,5,6,7 digits are 6!=720
I hope this will help u ;)
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