If 1 commuter van has 14 windows, then 6 commuter vans have (14 x 6) = 84 windows
The answer is No solution
Part A)
The coin landed on heads 9 times out of 30 flips, so the experimental probability is 9/30, which reduces to 3/10 probability.
Part B)
Theoretically a coin has a 1/2 probability of landing on heads each flip