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Factorial

How many ZEROES (NOT trailing zeroes) are there at \(2015!\)?

Note by Bryan Lee Shi Yang
2 years, 8 months ago

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This seems to be a number theory problem, but here's my python solution for this.

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from math import factorial
print(str(factorial(2015)).count('0'))
#Returns 1037, time taken=6ms

Pranjal Jain - 2 years, 8 months ago

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Wheyy....you know python too? I thought you used C++ for CS!

Krishna Ar - 2 years, 7 months ago

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Yeah I learnt python about a month ago due to lack of required data types in C++. Also, I am posting solutions in python now-a-days.

Pranjal Jain - 2 years, 7 months ago

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@Pranjal Jain Amazing.

Krishna Ar - 2 years, 7 months ago

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Can I call this "Python Jugaad" :P ?

Karthik Venkata - 2 years, 8 months ago

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Lol sure

Pranjal Jain - 2 years, 7 months ago

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@Pranjal Jain Haha maybe "Python Pranjal".

Bryan Lee Shi Yang - 2 years, 7 months ago

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@Bryan Lee Shi Yang I do not like pythonic answers, I like traditional mathematical thinking and logical reasoning. Any body has a mathematical answer?

Swapnil Das - 2 years, 7 months ago

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