Which of the following can be a number divisible by 24?

The units digit of the expression 127^813 x 553^3703 x 4532^828 is:

Find the units digit of the expression 11^1 +12^2 + 13^3 +14^4 +15^5 +16^6

The rightmost non-zero digit of the number 30^2720 is:

Find the number of zeroes at the end of 48!.

Find the number of zeroes at the end of 48!.

Solution:

Maximum power of 5 in 48!

= 9 + 1 

= 10

This way:

[ 48 / 5 ]  +  [48/5x5]  +  [48  / 5x5x5] + …….. [till the quotient is  greater than  zero]

= 9 + 1 + 0

= 10

Answer: 10

Find the maximum power of 18 in 200!.

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