The total number of ways of selecting six coins out of 20 one-rupee coins, 10 fifty-paisa coins, and 7 twenty-five paisa coins is: (a.) `28` (b.) `56` (c.) `^37 C_6` (d.) none of these

The total number of ways in which a beggar can be given at least one rupee from four 25-paisa coins, three 50-paisa coins and 2 one-rupee coins, is:

The total number of ways in which a beggar can be given atleast one rupee from four 25 paise coins,three 50 paise coins and 2 one rupee coins are

The number of ways in which 30 coins of one rupee each be given to six persons so that none them receive less than 4 rupees is:

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.

The value of 36 coins of 10 paise and 20 paise is Rs.6.60. The number of 10 paise coins is

Rahul owes Rs X and gives a Rs 50 note in payment.He receives the following change: 3X fifty-paise coins,14 ten-paise coins and 4X five-paise coins.X is equal to: (a) 12 (b) 16 (c) 18( d) 22