I have a total of Rs 300 in coins of denomination Rs 1, Rs 2 and Rs 5. The number of Rs 2 coins is 3 times the number of Rs 5 coins. The total number of coins is 160. How many coins of each denomination are with me?

Deveshi has a total of Rs 590 as currency notes in the denominations of Rs 50, Rs 20 and Rs 10. The ratio of the number of Rs 50 notes and Rs 20 notes is 3:5. If she has a total of 25 notes, how many notes of each denomination she has?

Lakshmi is a cashier in a bank. She has currency notes of denominations Rs 100, Rs 50 and Rs 10, respectively. The ratio of the number of these notes is 2:3:5. The total cash with Lakshmi is Rs 4,00,000. How many notes of each denomination does she have?

Six identical coins are arranged in a row. The total number of ways in which the number of heads is equal to the number of tails is

Bansi has 3 times as many two-rupee coins as he has five-rupee coins. If he has in all a sum of Rs 77, how many coins of each denomination does he have?

When a coin is tossed three times, the number of possible outcomes is :

When a coin is tossed two times, the number of possible outcomes is :

As the number of tosss of a coin increases, the ratio of the number of heads to the total number of tosses will be 1/2 . Is it correct? If not, write the correct one.

A coin is tossed once. Write its sample space. Find the total number of events.