9mountain bikers are on bicycle trip in how many possible ways can they follow each other

We could have  9 ways to pick the leader x 8 ways to pick the second place rider x 7 ways to pick the third place rider, etc.

So

9 x 8 x 7 x x  3 x 2 x 1  = 9!  = 362880  ways to arrange them

the correct answer is 1: 2

step-by-step explanation:

hope this your welcome : )

b

step-by-step explanation:

it have 5 sides and 5 identicle angle.the rest does not have the same property as b.

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