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Core Mathematics

Core Mathematics · Quick practice · answer shown after each question

Probability of independent events

Question 1 of 10

Question 1 of 10

A box has 4 red and 6 green balls. One is drawn, replaced, then another drawn. P(one of each colour) is

Question 2 of 10

Question 2 of 10

The probability of rain on any day is 0.3, independently of other days. What is the probability of no rain on two days running?

Question 3 of 10

Question 3 of 10

A coin is tossed and a die is thrown. P(head and a 6) is

Question 4 of 10

Question 4 of 10

The probability that Ama passes is 0.8 and Kofi passes is 0.7, independently. P(both pass) is

Question 5 of 10

Question 5 of 10

A coin is tossed and a die is thrown. What is the probability of a tail and an even number?

Question 6 of 10

Question 6 of 10

P(A) = 1/3, P(B) = 1/4, independent. Find P(neither A nor B).

Question 7 of 10

Question 7 of 10

Ama passes with probability 0.8 and Kofi with 0.7, independently. P(neither passes) is

Question 8 of 10

Question 8 of 10

A fair coin and a fair die are tossed together. How many outcomes are in the sample space?

Question 9 of 10

Question 9 of 10

Two fair dice are thrown. What is the probability that the total is 11?

Question 10 of 10

Question 10 of 10

A fair coin is tossed three times. The probability of exactly two heads is

Questions written by OtisamLMS in the style of the WASSCE. They are not WAEC past questions.