SBI PO · Quantitative Aptitude
Probability
Single-event probability — coins, dice, cards, balls.
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Take a full mock →Q1 · Probability · EASY
A bag contains 5 red balls, 4 green balls, and 3 blue balls. If one ball is drawn at random from the bag, what is the probability that it is either red or blue?
Q2 · Probability · MEDIUM
Two dice are thrown simultaneously. What is the probability that the sum of the numbers on the two dice is 9?
Q3 · Probability · EASY
A card is drawn at random from a well-shuffled deck of 52 cards. What is the probability that the card drawn is a face card (Jack, Queen, or King)?
Q4 · Probability · MEDIUM
Three coins are tossed simultaneously. What is the probability of getting at least two heads?
Q5 · Probability · MEDIUM
A bag contains 5 red balls, 6 blue balls, and 4 green balls. If two balls are drawn at random one after the other without replacement, what is the probability that the first ball is red and the second ball is blue?