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How many 5 digit numbers are possible by using the digits 1, 2, 3, 4, 5 which are divisible by 4 if repetition of digits is allowed?

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TCS Other Question

N! have 37 zeroes at its end. How many values of N are possible? How many 6-digit even numbers can be formed from the digits 1,2,3,4,5,6 and 7 so that digits should not repeat and the second last digit is even?
a)720
b)320
c)2160
d)6480