Q4. A card is drawn from a well shuffled pack of 54 cards. What is the probability of getting queen or ace card?

Q5. Six different books are on a shelf. In how many different ways could you arrange them?

Q6. How many ways can gold, silver, and bronze medals be awarded for a race run by 10 people?

Q8. Mr. Smith is the chair of a committee. How many ways can a committee of 4 be chosen from 10 people given that Mr. Smith must be one of the people selected?

Q7. There are 7 persons in an office. A group consisting of 3 persons has to be formed. In

how many ways can the group be formed