ICGSE Math chapter 8

A simple die is thrown 100 times and the number five appears 14 times. Find the experimental probability of throwing a five.

Research shows that the probability of a person being right-handed is 0.77. How many left-handed people would you expect in a population of 2,500?

A bag contains 36 balls. The probability that a ball drawn at random is blue is 0.25. How many blue balls are there in the bag?

An unbiased cubical die has six faces numbered 4, 6, 10, 12, 15 and 24. The die is thrown twice and the highest common factor (HCF) of both results is recorded. Calculate the probability that the HCF is 3 or 5.

A standard cubical die is thrown twice. Calculate the probability that two sixes are thrown.

A standard cubical die is thrown twice. Calculate the probability that the two numbers thrown are different.

Kirti and Justin are both preparing to take a driving test. The probability that Kirti passes is 0.7 and the probability that Justin passes is 0.6. Calculate the probability that neither passes the test.

Kirti and Justin are both preparing to take a driving test. The probability that Kirti passes is 0.7 and the probability that Justin passes is 0.6. Calculate the probability that Kirti passes the test, but Justin doesn’t pass.

Kirti and Justin are both preparing to take a driving test. The probability that Kirti passes is 0.7 and the probability that Justin passes is 0.6. Calculate the probability that at least one of Kirti and Justin passes.

Kirti and Justin are both preparing to take a driving test. The probability that Kirti passes is 0.7 and the probability that Justin passes is 0.6. Calculate the probability that exactly one of Kirti and Justin passes.