Probability questions | form four Basic Mathematics

A family has four children. By using a tree diagram, find the probability that the family has:
(i) all boys.
(ii) two boys and two girls.

Answer / Solution

UNSOLVED

Find the probability that a number selected at random from the numbers
-3, -2, 0, 3, 4 and 6 will be a solution set of the equation 

Answer / Solution

UNSOLVED

Two numbers are chosen at random from 1, 2 and 3. What is the. probability that their sum is odd?

Answer / Solution

UNSOLVED

If A and B are two events such that P (A) =¼ , P (B) = ½ , and P (A n B) = 1/8  , find:
(i) P (Au B).
(ii) P (Au B)'

Answer / Solution

UNSOLVED

At a second-hand car show room, 20% of the cars have no engine, 40% have bad tyres and 15 % have no engine and have bad tyres. What is the probability that a car chosen at random has good tyres and an engine?

Answer / Solution

UNSOLVED