Question

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@thesmartone

Answer 1

not sure about this one...720

Answer 2

btw i did 3!5!

Answer 3

well some arrangements would be
PPPBBBBB
BBBBBPPP

Answer 4

now you need to find the number of ways the B's (hard covers) and P's can be arranged

Answer 5

2(3!5!)
?

Answer 6

so 1440

Answer 7

how many ways can you arrange 5 books ?

Answer 8

5! = 120

Answer 9

5! = 120
3! = 6

Answer 10

so, then 720...?

Answer 11

s0 for 1 of the arrangements its 720

so for the 2 its 1440

yes

Answer 12

Oh, okay. thx

Answer 13

yw

Answer 14

yes 2*(5!3!) is correct