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Aptitude · all questions

Probability
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Tickets numbered 1 to 20 are mixed up and then a ticket is drawn at random. What is the probability that the ticket drawn has a number which is a multiple of 3 or 5?

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A bag contains 2 red, 3 green and 2 blue balls. Two balls are drawn at random. What is the probability that none of the balls drawn is blue?

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In a box, there are 8 red, 7 blue and 6 green balls. One ball is picked up randomly. What is the probability that it is neither red nor green?

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What is the probability of getting a sum 9 from two throws of a dice?

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Three unbiased coins are tossed. What is the probability of getting at most two heads?

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Two dice are thrown simultaneously. What is the probability of getting two numbers whose product is even?

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In a class, there are 15 boys and 10 girls. Three students are selected at random. The probability that 1 girl and 2 boys are selected, is:

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In a lottery, there are 10 prizes and 25 blanks. A lottery is drawn at random. What is the probability of getting a prize?

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From a pack of 52 cards, two cards are drawn together at random. What is the probability of both the cards being kings?

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Two dice are tossed. The probability that the total score is a prime number is:

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A card is drawn from a pack of 52 cards. The probability of getting a queen of club or a king of heart is:

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A bag contains 4 white, 5 red and 6 blue balls. Three balls are drawn at random from the bag. The probability that all of them are red, is:

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Two cards are drawn together from a pack of 52 cards. The probability that one is a spade and one is a heart, is:

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One card is drawn at random from a pack of 52 cards. What is the probability that the card drawn is a face card (Jack, Queen and King only)?

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A bag contains 6 black and 8 white balls. One ball is drawn at random. What is the probability that the ball drawn is white?

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Tickets numbered 1 to 20 are mixed up and then a ticket is drawn at random. What is the probability that the ticket drawn bears a number which is a multiple of 3 ?

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From a pack of 52 cards, two cards are drawn together at random. What is the probability of both the cards being kings?

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An urn contains 6 red, 4 blue, 2 green and 3 yellow marbles. If 4 marbles are picked up at random, what is the probability that at least one of them is blue?

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In a simultaneous throw of two coins, the probability of getting at least one head is-

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A card is drawn from a pack of 52 cards. The probability of getting a queen of club or a king of heart is-

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