Solution :-
(A) Total Friends = 6
If there are no restriction
then Simple Seating Arrangements = 6! = 6 * 5 * 4 * 3 * 2 * 1 = 720 Arrangements
(B) If all for a female sit together = then the arrangement for females = 4! = 4 * 3 * 2 = 24
Now Treat all Womens As one then total arrangement done for 3 :- One women group and two single man
= 3! = 3 * 2 = 6
Now total arrangements = 24 * 6 = 144
(C) Now when Group is that no Men together means = MWWMWW
Arrangement of four women = 4! = 4 * 3 * 2 = 24
Now Arrangement for two men in the middle = 2 ( As only change in both position )
So total Arrangements = 24 * 2 = 48
Now total arrangements = 48
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