Probability questions | form four Basic Mathematics

Find the probability that a number chosen at random from a set of integers between 10 and 20 inclusive is either a prime number or a multiple of five.

Answer / Solution

UNSOLVED

Three defective transistors and two good transistors are mixed in a box. Two transistors are randomly selected. Find the probability that they are both defective if the selections are made
(i) with replacement
(ii) without replacement.

Answer / Solution

UNSOLVED

In a class of thirty pupils, one prize is awarded for English,
another for Kiswahili, and a 'third for Mathematics. In how many •
ways can the winners be chosen?

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UNSOLVED

A girl.has two jackets, four nice blouses, and three pairs of good
shoes. How many different outfits, consisting of a jacket, blouse,
and a pair of shoes, can she make out of these?

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UNSOLVED

A boy has five different flags. In how many ways can he fly them one
above the other?

Answer / Solution

UNSOLVED