Probability questions | form four Basic Mathematics

A pair of fair dice is thrown. Find the probability that the sum is 10 or
greater if a 5 appears on the first die.

Answer / Solution

UNSOLVED

Giventhat P(A') =  P (B') = and P(AnB) = ·
Find P (AUB ).

Answer / Solution

UNSOLVED

Juma and Gadi are about to sit for CSEE. Juma says "I have 50% chance of passing my examinations". Gadi says "'Probability of failing my examinations is' ¼ ''. Find the
probability that:
(i) Gadi wili pass the examinations.
(ii) Either Juma will pass the examinations or Gadi will fail the examinations.

Answer / Solution

UNSOLVED

The table below shows a distribution of students in each age group i"n a class.

What is the probability that a student chosen from a class
(i) is 17 years old?
(ii) over 16 years old?

Answer / Solution

UNSOLVED

A two digit number is written using the numbers 2, 3 and 4 without repetition.
Find the probability that the number is:
(i) even.
(ii) less than 30.

Answer / Solution

UNSOLVED