In how many ways can all the commanders communicate? Options: A . &nbsp 2 B . &nbsp 3 C . &nbsp 4 D . &nbsp 6

In how many ways can all the commanders communicate?

Question

In how many ways can all the commanders communicate?

Options:

A . 2

B . 3

C . 4

D . 6

Answer: Option D
:
D

6 ways as in case 1, 2, 3 can also communicate in the reverse direction i.e E can start and end with A.

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