ECZ 2015 · O-Level Paper 1 — Probability

A fair six sided die numbered 1, 2, 3, 4, 5 and 6 is rolled. Find the probability of obtaining a prime number.

Verified working — step 1

List the primes on the die before counting - remember 1 is NOT prime, but 2 is.

The full step-by-step working and final answer are included with Premium — checked against ECZ marking standards.

Original examination question © Examinations Council of Zambia. Worked solution and commentary © G12 Titan — not to be reproduced without permission.

Have a different question?

Search it — if it is from a past paper or a school mock, chances are we have it worked out, or one that uses the same method.