A person buys a lottery ticket in 50 lotteries, in each of which his chance of winning a prize is `1/(100)`. What is the probability that he will win a prize(a) at least once (b) exactly once (c) at least twice?

Aarushi, sold 100 lottery tickets in which 5 tickets carry prizes. If Priya purchased a ticket, what is the probability of Priya winning a prize? (19)/(20) (b) 1/(25) (c) 1/(20) (d) (17)/(20)

A and B play a game where each is asked to select a number from 1 to 25 . If the two numbers match ,both of them win a prize . The probability that they will not win a prize in a single trial is ,

1000 tickets of a lottery were sold and there are 5 prizes on these tickets. If Saket has purchased one lottery ticket, what is the probability of winning a prize?

In a lottery 10,000 tickets are sold and ten equal prizes are awarded,. What is the probability of not getting a prove if you buy i. 1 ticket ii. two tickets iii. 10 tickets.

In a lottery 10,000 tickets are sold and ten equal prizes are awarded,. What is the probability of not getting a prove if you buy i. 1 ticket ii. two tickets iii. 10 tickets.

The probability that a person will win a game is (2)/(3) and the probability that he will not win a horse race is (5)/(9) . If the probability of getting in at least one of the events is (4)/(5) ,what is the probability that he will be successful in both the events ?

Forty team play a tournament. Each team plays every other team just once. Each game results in a win for one team. If each team has a 50% chance of winning each game, the probability that he end of the tournament, every team has won a different number of games is 1//780 b. 40 !//2^(780) c. 40 !//2^(780) d. none of these

A and B play a game of tennis. The situation of the game is as follows: if one scores two consecutive points after a deuce, he wins; if loss of a point is followed by win of a point, it is deuce. The chance of a server to win a point is 2/3. The game is a deuce and A is serving. Probability that A will win the match is (serves are change after each game) 3//5 b. 2//5 c. 1//2 d. 4//5

At a fete, cards bearing number 1 to 1000, one number on one card,are put in a box. Each player selects one card at random and that card is not replaced. If the selected card has a perfect square greater than 500, the player wins a prize. What is probability that (i) the first player winz a price? (ii) the second player wins a prize, if the first has won?

From a group of 10 persons consisting of 5 lawyers, 3 doctors and 2 engineers, four persons are selected at random. The probability that the selection contains at least one of each category is (A) 1//2 (B) 1//3 (C) 2//3 (D) none of these