Questions on Coins

Solve the following questions. If one coin and one die thrown simulaneously find the probability of getting even numbre and tail.

Directions: The questions below consist of a question followed by two statements labelled l and II. You have to decide if these statements are sufficient to answer the question. Give answer What is the value of the coins in my pocket? Statements: I. There are 20 coins in my pocket? II. 15 of them are 10-paise coins.

A bag contains 3 one Rs coins, 4 five Rs coins and 5 ten Rs coins. How many selection of coins can be formed by taking atleast one coin from the bag

In an examination,10questions of true-false type are asked.A student tosses a fair coin to determinehis answer to each question.If the coin falls heads,he answers true and if it falls Lails,he answers true and if it probability that he answers at most correctly 7 questions is (121)/(128) .

Study the information below and answer questions based on it. Ten coins are distributed among four people P, Q, R & S such that if one person gets n coins, second gets (n +1), third gets (n + 2) and so on but not necessarily in the same order. Q gets more coins than P and S gets fewer coins than R. If R gets two coins more than S but maximum number of coins which of the following is necessarily true ?