Question

In how many ways can 8 different books be arranged over one another if one of the books is an encyclopedia and it must be on the second position from the top?
a.
720
c.
5,040
b.
2,520
d.
40,320

Answer 1

@nevermind_justschool

Answer 2

@conain007

Answer 3

@ScarlettGrace<3

Answer 4

what does that say

Answer 5

I will say c. There are 7 choices for the first book, 1 choice for the second (must be encyclopaedia), 6 for third, 5 for fourth, 4 for fifth, 3 for sixth, 2 for seventh and 1 for eighth. Therefore, the total combination is 7x1x6x5x4x3x2x1=7!=5040.

Answer 6

yes thomas is right

Answer 7

Thank you