Nine persons enter a lift from ground floor of a building which stops in 10 floors (excluding ground floor). If is known that persons will leave the lift in groups of 2, 3, and 4 in different floors. In how many ways this can happen?

Q: In how many ways can 6 girls and 3 boys sit on a row of 9 chairs in such a way that no two boys sit…

A: we have to solve given problems:

Q: In how many ways can one put 8 adults and 4 children in a row, such that no two children are next to…

A: We have given that there are 8 adults and 4 children in a row. Here our claim to to show in how many…

Q: in how many ways can 5 starting positions on a basketball team be filled with 12 men who can play…

A:

Q: If 2 specific persons among the 10 people lined up to get on the bus refuse on following each other…

A:

Q: A mother, father, and their three children are to line up for a photo. In how many ways can these…

A:

Q: In how many ways can we seat 6 boys and 3 girls on a row of seats so that no two girls sit next to…

A: If no two girls can sit together, then we need to alternate boy and girl. We can start with a boy…

Q: Out of 6 children, in how many ways can a family have at least 1 girl?

A:

Q: A class has 10 students. How many ways can the class be grouped into 2 groups of equal size.

A:

Q: You have five student groups to present in class. One group cannot go first because they need…

A: The objective of this question is to find out the number of possible orders in which the five…

Q: Suppose that there is a bag containing 6 marbles. How many ways can you draw 4 marbles from the bag…

A: The bag contains =6 marbles number of marbles drawn=4

Q: Prizes are to be given to different people in a group of 18. In how many ways can a first prize, a…

A: Use the given information.

Q: salesperson is scheduling 5 meetings in one day. In how many different ways can the salesperson…

A:

Counting Principles

In statistics, the counting principle can be said to be the concept in which the quantity of an item is determined. There can be a single item, or a group of items, or items that are related to each other. In every possible set of items, the quantity of the possible item groups or their sorting measures can be determined with counting principles.