# Tag Archives: Probability

## Aptitude | Probability | Question 6

What is the probability that a number selected from numbers [1,30] is prime number? (A) 1/3 (B) 2/7 (C) 5/9 (D) 5/30 Answer: (A) Explanation:… Read More »

## Aptitude | Probability | Question 5

An urn contains 12 red and 18 white marbles. Two marbles are drawn without replacement one after another. What is the probability that first is… Read More »

## Aptitude | Probability | Question 4

4 dices are thrown simultaneously. What is the probability that all the dices show the same number. (A) 1/216 (B) 1/36 (C) 4/216 (D) 4/36… Read More »

## Aptitude | Probability | Question 3

A box contains 6 black, 5 brown and 2 yellow balls. If 2 balls are selected at random, what is the probability that both are… Read More »

## Aptitude | Probability | Question 2

A and B appeared for an exam. Let A is selected when even x happens and B is selected if the event y happens. The… Read More »

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## Aptitude | Probability | Question 1

A number p is chosen at random from the numbers [-3, 3]. What is the probability that value of p < 2 (A) 3/7 (B) 5/7… Read More »

## Aptitude | Probability | Question 1

Given a coin which gives HEADS with probability 1/4 and TAILS with 3/4. The coin is tossed k times. What is the probability that we… Read More »