Within the past $20$ years, a construction company has been consistently bidding on five jobs ever year.

The company$$s performance shows that it was successful in winning $29$ jobs in the $20-$year period.

c$.$ On how many jobs should it bid this year if it wants the probability of winning three jobs to be at

least $0\mathrm{.}40?[$hint: solve by means of enumeration, you can use excel to facilitate the

computation