A box contains 6 tickets. Two of the tickets carry a price of `Rs. 5//-` each , the other 4 the price of `Rs.1`. If one ticket is drawn, the mean value of the price is

A box contains 25 tickets numbered 1 to 25 Two tickets are drawn at random . What is the probability that the product of the numbers is even ?

A box contains 50 tickets. Each ticket is numbered from 1 to 50. One ticket is selected at random, find the probability that the number on the ticket is not a perfect square.

A box contains 30 tickets , bearing only one number form 1 to 30 on each . If one ticket is drawn at random , find the probability of an event that the ticket drawn bears . an odd number

A box contains 30 tickets , bearing only one number form 1 to 30 on each . If one ticket is drawn at random , find the probability of an event that the ticket drawn bears a complete square number .

A bag contains tickets numbered 1 to 20 . Two tickets are drawn at random , Find the probability that sum of the two numbers on the tickets is even .

A box contains 30 tickets, bearing only one number from 1 to 30 on each. If one ticket is drawn at random, find the probability of an event that the ticket drawn bears

A box contains 75 tickets numbered 1 to 75. A ticket is drawn at random from the box. Find the probability that: number on the ticket is a perfect square.

A box contains tickets numbered 1 to 20. 3 tickets are drawn from the box with replacement. The probability that the largest number on the tickets is 7, is