At a bus station, buses depart at a rate of 3 every 10 minutes. At this rate, how many buses would you expect to depart in one hour? A. 6 B. 15 C. 18 D. 30

the answer is c.(18)

Step-by-step explanation:

If 3 depart every 10 minutes there are 60 minutes in an hour. So 3 buses times 6 10’s would = 6x3=18

Well, there are 60 min. in one hour, so 10*6=60. Then we have to multiply 3 by 10 as well. So the answer is D: 30 busses.

Solution:

As Given a coin is tossed thrice.

Total possible outcome = {HHH, TTT,HHT,HTH,THH,TTH,THT,HTT}=8

Total Favorable outcome = Exactly one Head = {TTH, THT,HTT} = 3

Probability of getting exactly one head =

          =