The night before the exam, sleep. A rested mind recalls what a tired one has only read.

Probability — quick quiz

5 SOF IMO-pattern questions on Probability. Instant scoring and solutions, no signup — see where you stand in a few minutes.

Question 1 of 5

Medium

A box contains cards numbered 1 to 50. One card is drawn at random from the box. What is the probability that the number on the card is divisible by both 2 and 5?