Question

Ques1 only be quick to be mark as brainliest and i want detailed and easy explanation.

Answer 1

Let's guess B and C are same man , and call them together as X .

Now A,X,D,E can sit together in 4! = 24 ways.

That means B and C can sit together in 2×24 = 48 ways ( ie. B,C or C,B)

A,B,C,D,E can sit in 5! = 120 ways

Then answer = 120 - 48 = 72 ways