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Sunday, 24 March 2019

Find the number of zeroes at the end of 68!


Find the number of zeroes at the end of 68!

Solution:

Maximum power of 5 in 68!
= 13 + 2
= 15

This way:

[ 68/ 5 ]  +  [68/5x5]  …….. [till the quotient is  greater than  zero]
= 13 + 2
= 15

Answer: 15


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