Question

will fan and medal (:

Answer 1

1. Suppose Ruth Ann has 3 routes she can travel between the school to the library, and 5 routes from the library to her home. How many routes are there from Ruth Ann’s school to her home with a stop at the library? (1 point)
9
60
15(My choice)
25

2. Verne has 6 math books to line up on a shelf. Jenny has 4 English books to line up on a shelf. In how many more orders can Verne line up his books than Jenny? (1 point)
24
720
14
696(My choice)

3. Evaluate 7C6. (1 point)
9
1
5,040
7(My Choice)

4. In how many ways can 3 singers be selected from 5 who came to an audition? (1 point)
1
10
5
60(My Choice)

5. A bag contains 8 red marbles, 4 white marbles, and 5 blue marbles. You draw one marble at random. Find P(red and blue). (1 point)
40/17
0
12/17
13/16

Answer 2

@SolomonZelman @Vincent-Lyon.Fr @YanaSidlinskiy

Answer 3

@texaschic101

Answer 4

@SolomonZelman

Answer 5

The answer in 1. is correct, there are 3 ways to get to the stop, and then every of the three ways can be combined with 5 different routes. 3x5 = 15.

Answer 6

lol thanks. May u plz help with the other ones ?

Answer 7

In 2. the order DOES matter so there's a formula to calculate that. I believe it is 4*3*2*1 for the 4 books, and 6*5*4*3*2*1 for the 6 books.
The reason being that first you can start 6 different configurations, when the first book is gone, you only have 5 remaining configurations for the second spot, and so on.

6! - 4! =
720 - 24 = 696

Answer 8

In 4., it doesn't matter in which order the singers are chosen

not sure how you convert that to choosing and such :)