A box contains two 50 paise coins, five 25 paise coins and a certain fixed number `N(geq2)` 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.

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 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

A purse contains 4 silver and 5 copper coins. A second purse contains 3 silver and 7 copper coins. If a coin is taken out at random from one of the purses, what is the probability that it is a copper coin ?

4 five-rupee coins, 3 two-rupee coins and 2 one-rupee coins are stacked together in a column at random. The probability that the coins of the same denomination are consecutive is

N fair coins are flipped once. The probability that at most 2 of the coins show up as heads is 1/2 .Find the value of N.

A bag contains 25 paise and 50 paise coins whose total value is Rs 30 . If the number of 25 paise coins is four times that of 50 paise coins, find the number of each type of coins.

A bag contains Rs 187 in the form of 1 rupee, 50 paise and 10 paise coins in the ratio 3:4: 5. Find the number of each type of coins.

A piggy bank contains hundred 50 paise coins, fifty Rs. 1 coins, twenty Rs. 2 coins and ten Rs. 5 coins. If it is equally likely that one of the coins will fall out when the bank is turned upside down, find the probability that the coin which fell (i) will be a 50 paise coin (ii) will be of value more than Rs. 1 (iii) will be of value less than Rs. 5 (iv) will be a Rs. 1 or Rs. 2 coin.

A piggy bank contains hundred 50 paise coins, fifty Rs. 1 coins, twenty Rs. 2 coins and ten Rs. 5 coins. If it is equally likely that one of the coins will fall out when the bank is turned upside down, find the probability that the coin which fell will be a 50 paise win will be of value more than Rs. 1 will be of value less than Rs. 5 will be a Rs. 1 or Rs. 2 coin.

A bag contains twenty Rs. 5 coins, fifty Rs. 2 coins and thirty Rs. 1 coins. If it is equally likely that one of the coins will fall down when the bag is turned upside down, what is the probability that the coin is a Rs. 1 coin ?