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The number 15 factorial ends in p zeros when converted to base 12. Find p

 Feb 10, 2018
 #1
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15 factorial is 1307674368000 under base 10. When converted to base 12, it turns into 191529600000.

 

There are 5 zeroes.

 Feb 10, 2018
 #2
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15! = 1,307,674,368,000 - This is in decimal form. This, then, is converted to base 12, which gives the above answer of: 191,529,600,00012 .

 Feb 10, 2018
edited by Guest  Feb 10, 2018

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