Day 5Discrete Mathematics Level pending
Ash decides to buy 100 of each Pikachu, because he is rich. 33 are male, and 37 are female. Ash wants his own Pikachu family. If a Pikachu family includes 25 males, and 25 females, how many distinct Pikachu families are there? Divide your answer by 10^13, and round to the nearest whole number.
Details and Assumptions
All Pikachus are different. The order of Pikachus in the family does not matter.