Activity: Let's do this.
Provide the missing parts of the solutions of the given problems.
Activity 1: From a club of 20 members, a President, Vice President, Secretary and treasurer are
to be selected. In how many ways can the offices be filled?
Solution:
Does order matter? (yes or no)
Therefore, it is a
problem. (Permutation or Combination)
n = 20 and r=4
n!
(n,r) =
(What formula to be used?)
20!
(20, 4) =
(Substitute the given)
(20, 4) =
(Final answer)​