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

If 10 coins of Rs. 10, five coins of Rs. 5 are to be placed in a line, then the probability that the extreme coins are of Rs. 5 is

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 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

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.

If three one rupee coins can be placed around a ten-paise coin such that each one rupee coin touches the ten paise coin as well as the other two one-rupee coins,the ratio of the radii of the one rupee and ten paise coin is:

A box contains two 50 paise coins,five 25 paise coins and a certain fixed number N(>=2) of 10 and 5 -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 1 rupee and 50 paise.

A bag contains one rupee, 50 paise and 25 paise coins. The ratio of the number of 1 rupee coins to that of 50 paise coins is 5 : 9 and the ratio of the number of 50 paise conins to that of 25 paise coins is 2 : 1 . Find the value of the 50 paise coins in the bag if the total value of the bag is Rs. 425.

if three 1rupee coin can be placed around a 10 paise coins such that each one rupee coin touches the 10 paise coin as well as the other 1 rupees coins,the ratio of the radii of 1 rupee and 10 paise coin is: