Adaptive Practice
Probability
10 questions • Earn up to 113 XP • First attempt — go for 100%!
0
XP
0
Correct
x1
Combo
Question 1 of 10
⏱ 0:30
Easy
A bag contains 5 red balls and 3 green balls. What is the probability of drawing a red ball?
Easy
A fair six-sided die is rolled once. What is the probability of getting a number greater than 4?
Easy
Two coins are tossed simultaneously. What is the probability of getting exactly one head?
Medium
A box contains 4 blue pens, 6 black pens, and 5 red pens. If a pen is picked at random, what is the probability that it is not black?
Medium
A card is drawn from a well-shuffled deck of 52 cards. What is the probability of drawing a king or a queen?
Medium
A die is rolled twice. What is the probability that the sum of the numbers obtained is 7?
Hard
In a class of 40 students, 25 like cricket, 18 like football, and 10 like both. What is the probability that a randomly selected student likes cricket or football?
Hard
A bag contains 3 white, 4 black, and 5 red balls. Two balls are drawn one after the other without replacement. What is the probability that both balls are red?
Hard
A box contains 7 defective and 13 non-defective bulbs. Two bulbs are drawn at random without replacement. What is the probability that exactly one bulb is defective?
Hard
A card is drawn from a deck of 52 cards. What is the probability that the card is either a heart or a face card?