Probability - Practice Questions
A collection of questions that typically appear on Probability in MBA entrance
exams such as XAT, TANCET, CAT and PGSEM Practice Test.
- Question 1: What is the probability of getting at least one six
in a single throw of three unbiased dice?
Answer and Explanations �
- Question 2: What is the probability that a two digit number
selected at random will be a multiple of '3' and not a multiple of '5'?
Answer and Explanations �
- Question 3: A man bets on number 16 on a roulette wheel 14 times
and losses each time. On the 15th span he does a quick calculation and finds
out that the number 12 had appeared twice in the 14 spans and is therefore,
unable to decide whether to bet on 16 or 12 in the 15th span. Which will
give him the best chance and what are the odds of winning on the bet that he
takes? (Roulette has numbers 1 to 36)
Answer and Explanations �
- Question 4: Two squares are chosen at random on a chessboard.
What is the probability that they have a side in common?
Answer and Explanations �
- Question 5: When two dice are thrown simultaneously, what is the
probability that the sum of the two numbers that turn up is less than 11?
Answer and Explanations �
- Question 6: When 4 dice are thrown, what is the probability that
the same number appears on each of them?
Answer and Explanations �
- Question 7: An experiment succeeds twice as often as it fails.
What is the probability that in the next 5 trials there will be four
successes?
Answer and Explanations �
- Question 8: An anti aircraft gun can fire four shots at a time.
If the probabilities of the first, second, third and the last shot hitting
the enemy aircraft are 0.7, 0.6, 0.5 and 0.4, what is the probability that
four shots aimed at an enemy aircraft will bring the aircraft down?
Answer and Explanations �
- Question 9: A number is selected at random from first thirty
natural numbers. What is the chance that it is a multiple of either 3 or 13?
Answer and Explanations �
- Question 10: A man can hit a target once in 4 shots. If he fires
4 shots in succession, what is the probability that he will hit his target?
Answer and Explanations �
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