Answer:
68
Step-by-step explanation:
8 + 3 (71 – 51)
71-51= 20
20*3=60
60+8=68
Answer:
There are 3,628,800 different ways for the runners to finish.
Step-by-step explanation:
Arrangments of x elements:
The number of possible arrangments of x elements is given by the following formula:

In this question:
10 different runners, which means that the number of different ways that there are for the runners to finish is an arrangment of 10 elements. So

There are 3,628,800 different ways for the runners to finish.
Answer:
No. of times Ellen draws a blue marble = 120
Step-by-step explanation:
No. of red marbles = 3
No. of blue marbles = 2

So, the required probability is 120.
Answer: explain the meaning of
Step-by-step explanation: