101 Dalmations!
Probability
Level
4
Cruella De Vil has 15 dalmations captive. She wishes to cage them into 5 distinct cages, with each cage containing 3 puppies. If each dalmatian is distinct, and the number of ways Cruella can arrange the 15 dalmatians in each of the cages is , find the sum of the digits of .
Image credit: Flickr PopCultureGeek
by
Yan Yau Cheng