People often use rubber stamps in businesses and in schools, but many also enjoy using them just for personal entertainment. For example, a person can use a rubber stamp to mark a report complete or ...

(a) It should dispense 25, 15 and 10 rupees worth of stamps. (b) It should accept 50, 25, 10 and 5 rupees coins. (c) It can accept not more than one coin for each transaction. (d) If more than one ...