From a lottery of 30 tickets, marked 1, 2, 3,..... 30, four tickets are drawn. The chance that those marked 1 and 2 are among them is

In a lottery of 50 tickets numbered 1 to 50, one ticket is drawn. Find the probability that the drawn ticket bears a prime number.

In a lottery of 50 tickets numbered 1 to 50, one ticket is drawn. Find the probability that the drawn ticket bears a prime number.

In a lottery of 50tickets numbered 1 to 50 one ticket is drawn.Find the probability that the drawn ticket bears a prime number.

During a draw of lottery,tickets bearing numbers 1,2,3,......,40,6 tickets are drawn out & then arranged in the descending order of their numbers.In how many ways,it is possible to have 4 ticket bearing number 25 .

From a bag containing 30 tickets numbered 1, 2, 3, ... 30, three tickets are selected at random without replacement. Suppose these tickets are arranged as x_1 lt x_2 lt x_3 . The probability that x_2 = 15 and x_3 gt 20 , is

In a lottery of 50 tickets numbered 1 to 50 , two tickets are drawn simultaneously.Find the probability that: both the tickets drawn have prime numbers.none of the tickets drawn has prime number.one ticket has prime number.

In a lottery of 50 tickets numbered from 1 to 50,two tickets are drawn simultaneously.Find the probability that :None of the tickets drawn has prime number.

An um contains 30 tickets numbered 1 to 30 two tickets are drawn at random the probability that both the numbers are prime is

In a lottery of 100 tickets numbered 1 to 100 two tickets are drawn simultaneously , find the probability that none of the tickets drawn has a prime number .