Probability Tes...

In a simultaneous roll of two dice, the probability of getting a total of 7 is

If a fair coin is tossed twice, what is the probability of getting heads in both the trials?

Tickets numbered from 1 to 25 are mixed up together and a ticket is drawn at random. What is the probability that the ticket drawn contains a prime number?

The probability that a card drawn from a pack of 52 cards will be either a diamond or a king is

The probability that a leap year selected at random will contain 53 Sundays is

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

A bag contains 6 black, 9 white and 5 red balls. Three balls are drawn at random. What is the probability that all the balls drawn are black?

A card is drawn at random from a pack of 52 cards. The probability of getting a red card or an ace is

A bag contains 8 white and 5 red balls. Three balls are drawn at random. What is the probability that all the balls drawn are white?

A pair of dice is thrown and the numbers appearing have a sum greater than or equal to 10. The probability of getting a sum of 11 is

A bag contains 9 red and 6 white balls. 3 balls are drawn at random. What is the probability that 1 ball is red and the other 2 are white?

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

In a lottery of 50 tickets numbered 1 to 50, 2 tickets are drawn simultaneously. The probability that both the tickets drawn have prime numbers is

A box contains 15 electric bulbs, out of which 3 are defective. Two bulbs are chosen at random from this box. The probability that at least one of these is defective is

3 dice are rolled together. The probability of getting a total of at least 6 is

A natural number is chosen at random from the first 100. The probability of it being divisible by 3 or 5 is

4 cards are drawn at random from a pack of 52 cards. The probability of getting all the 4 cards of the same number or face is

Let A and B be two independent events. The probability that both A and B occur is and the probability that neither A nor B occurs is . The respective probabilities of A and B are

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

An unbiased dice is rolled three times. The probability that the minimum number on any toss is not less than 3 and maximum not greater than 5 is