There are 320 students at a college. 20 students travel to college by taxi.

Find the experimental probability that a randomly chosen student travels to college by taxi.

There are 320 students at a college. 104 students cycle to college.

Find the experimental probability that a randomly chosen student cycles to college.

There are 320 students at a college. 104 students cycle to college.

Find the experimental probability that a randomly chosen student does not cycle to college.

There are 320 students at a college. 20 travel by taxi and 104 cycle to college.

Find the experimental probability that a randomly chosen student neither cycles nor travels by taxi.

Mr Khan drives to his office every weekday. In the last 50 working days, he had to stop at a pedestrian crossing 32 times.

Find the experimental probability that he will have to stop there tomorrow.