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A man takes a step forward with probabil...

A man takes a step forward with probability 0.3 and backward with probability 0.7. The probability that at the end of nine steps, he is just one step away from the starting point is

A

`126(0.21)^(4)`

B

`368(0.24)^(5)`

C

`462(0.24)^(6)`

D

`368(0.24)^(6)`

Text Solution

Verified by Experts

The correct Answer is:
A
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