Question

The number of way in which 6 red roses and 3 white roses (all rose different ) can from garland that all the white come together is -

Answer 1

REF.Image

A garland in a circular permutation case along with side cant

the white roses are together, hence, red roses are also together.

write roses can permute in = 3! ways.

also red roses can permute in = 6! ways.

but for a garland, front and back side would be same, so no of ways :-

$N=\frac{3!\times 6!}{2}=72$ possible arrangement.