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A man has to move 9 steps. He can move i...

A man has to move 9 steps. He can move in 4 directions: left, right, forward, backward in how many ways he can move 9 steps such that he finishes his journey one step away (either left orright or forward or backward) from the starting position?

A

`(""^(10)C_(5))^(2)`

B

`4xx(""^(9)C_(4))^(2)`

C

`(""^(9)C_(4))^(2)`

D

`4xx(""^(10)C_(5))^(2)`

Text Solution

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The correct Answer is:
A, B
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