Ivy checks to see how many people are waiting in line. She notes that there are 120 possible line arrangements for the people th

Question

3 years ago

10

at are in line. How many people are waiting to order pizza?

1 answer:

Marina86 [1] · Answer 1 · 2022-01-23T14:38:12+03:00

The total number of persons standing in the line waiting for ordering pizza are 5.

Explanation:

There are 5 people in total so the first place can be occupied by any of the 5 persons.

Secondly the second place in the line can be occupied by any of the 4 persons left.

Then the third place will be occupied by any remaining 3 persons as the front two places are already occupied.

Similarly the fourth place will be taken by any of the remaining two people. And lastly the last place will b filled by the last remaining person.

So the total number of ways will be 5*4*3*2*1 = 120 ways that is given in the question.