A bag contains 12 two rupee coins, 7 one rupee coins and 4 half rupee coins. If 3 coins are selected at random , then the probability that the sum of the 3 coins is maximum is

A bag contains 12 two rupee coins, 7 one rupee coins and 4 half a rupee coins. If three coins are selected at random, p=probability that the sum of the three coins is maximum, q=probability that the sum of the three coins is minimum,r=probability that each coin is of different value. Arrange p,q and r in increasing order of magnitude.

A purse contains three 10 paise, three 50 paise and ten 1 rupee coins. If three coins are selected at random, then the probability that the total amount is 2 rupee is

In a bag there are 5 half rupee coins,4 twenty paise coins and 4 ten paise coins.If two coins are drawn from the bag at random then the probability that the amount drawn to be minimum is

If m rupee coins and n ten paise coins are placed in a line,then the probability that the extreme coins are ten paise coins,is

A bag contains n+1 coins, one of which is a two heads coin and the rest are fair. A coin is selected at random and tossed. If the probability. That the toss result in a head is 7/12 then the value of n is

Two coins (a one rupee coin and a two rupee coin) are tossed once.Find a sample space.

A bag contains 50 coins and each coin is marked from 51 to 100. One coin is picked at random. What is the probability that the number on the coin is not a prime numbre?

A bag contains 15 one rupee coins, 25 two rupee coins and 10 five rupee coins. There are _______ 5 rupee coins and _________ 2 rupee coins.

A box contains 2 fifty paise coins, 5 twenty five paise coins and a certain fixed number n (ge2) of ten and five paise coins. Five coins are taken out of the box at random. Find the probability that the total value of these 5 coins is less than one rupee and fifty paise.