Combinations
 

Combinations problem 6


In an enclosure, there are 10 cows and 5 bulls on a farm. Due to overcrowding in the current enclosure, 6 animals will be moved to another enclosure. In how many ways can the owner do this if he wants to move 3 cows and three 3 bulls:


  • if it doesn't matter which cow and which bull is moving,

  • if the oldest bull must be in the new enclosure,

  • if the 2 oldest bulls are not allowed in the new enclosure,

  • if he wants to keep the 3 youngest cows in the current enclosure?


 

material editor: Hope Ezeocha