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6 votes
Pls answerrrrrrrrrrrrrrrrrrrrrrrrrrr

Pls answerrrrrrrrrrrrrrrrrrrrrrrrrrr-example-1

1 Answer

12 votes

Answer:

The answer should be 2

Explanation:

P

r

=

n

!

(

n

r

)

!Subtract

1

from

2

.Simplify

2

!

(

1

)

!

.

User Speedplane
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