A topic you 'somewhat know' is a topic you don't know yet. Be honest about your weak areas.

Probability — quick quiz

5 NSEJS-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 from 1 to 20. One card is drawn at random. What is the probability that the number on the card is divisible by both 2 and 3?