Question

Five people get into an elevator. There are seven floors on which they can get off....

Five people get into an elevator. There are seven floors on which they can get off.

Suppose that two people exit on the same floor and everyone else on different floors (4 floors altogether); What is the total number of different ways they can do this?

Suppose that everyone exits on a different floor; What is the total number of different ways they can do this?

Suppose three people exit on one floor and the other two on two different floors (3 floors altogether); What is the total number of different ways they can do this?

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
There are 10 people in an elevator that is at the sixth floor. If the elevator...
There are 10 people in an elevator that is at the sixth floor. If the elevator goes down to the first floor, in how many ways can the 10 people exit the elevator in such a way that at least one person gets off at each of the five floors below?
A particular building has 7 floors and a basement. If 11 people get on the elevator...
A particular building has 7 floors and a basement. If 11 people get on the elevator in the basement, and each chooses a floor at random on which to get out, independently of the others, at how many floors do you expect the elevator to make a stop to let one or more people out?
an elevator starts with 5 people on the first floor of an 8 story building and...
an elevator starts with 5 people on the first floor of an 8 story building and stops at each floor. a, in how many ways can all the people get off the elevator? b. what is the probability that no two people get off on the same floor?
1. what is the probability that five guests of a twenty-floor hotel all stay on different...
1. what is the probability that five guests of a twenty-floor hotel all stay on different floors (no pair of them are on the same floor) if, a. Any guests can stay on any floor? b. Two smokers of the group must stay in four smoking floors and the rest must stay in sixteen non-smoking floors. 2. Two dice ( one black and one white) are rolled simultaneously five times. What is the probability that number on the black dice...
Circular Permutations and Permutations with Similar Elements 1) In how many ways can three people be...
Circular Permutations and Permutations with Similar Elements 1) In how many ways can three people be made to sit at a round table? 2) In how many ways can three couples be seated at a round table, so that men and women sit alternately? 3) In how many ways can five keys be put on a key ring? 4) Find the number of different permutations of the letters of the word MATHEMATICS. 5) How many different ways can three pennies,...
4.4.12 How many ways can you choose seven people from a group of twenty? 5.1.2 Suppose...
4.4.12 How many ways can you choose seven people from a group of twenty? 5.1.2 Suppose you have an experiment where you flip a coin three times. You then count the number of heads. State the random variable. Write the probability distribution for the number of heads. Draw a histogram for the number of heads. Find the mean number of heads. Find the variance for the number of heads. Find the standard deviation for the number of heads. Find the...
1/ Imagine a party with n people. When a person comes to the party they go...
1/ Imagine a party with n people. When a person comes to the party they go and shake hands with a few other people (but not necessarily everyone - in fact there can be unfriendly people who do not shake hands with anyone!). None of the attendees narcissistic enough to shake hands with themselves. Prove that there are two people who shake the same number of hands. For example, suppose 3 people attend the party and everyone shakes hand with...
An indicator light can be in one of three states: OFF, FLASHING and ON, with probabilities...
An indicator light can be in one of three states: OFF, FLASHING and ON, with probabilities 1/2, 2/5 and 1/10 respectively. A test panel has five such lights whose states are mutually independent. (a) What is the probability that three or more lights are OFF and at most one is ON? (b) A second test panel with five such lights is observed independently. Let X be the total number of lights which are FLASHING among the two panels. Determine the...
A hamburger chain’s game card has ten squares, each of which has a covering that can...
A hamburger chain’s game card has ten squares, each of which has a covering that can be rubbed off to reveal what is pictured beneath. Seven squares show different foods, two squares show the same food, and one square has an ‘X-YOU LOSE’ on it. The game is played by rubbing the covering off the squares until either you get the pair and win, or you get the ‘X’ and lose. What is the probability that you will win this...
ind the number of ways of selecting 12 balls from 6 red bal COMBINATION Solve each...
ind the number of ways of selecting 12 balls from 6 red bal COMBINATION Solve each of the following problems. (Show your work.) Find the number of ways of selecting 12 balls from 6 red balls, 5 white balls and 5 blue balls if each selection consists of 4 balls of each color. Among the seven nominees for two vacancies on the city council are four men and six            women. In how many ways may these vacancies be filled...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT