Question

Find the number of ways in which $5$ different beads can be arranged to form a necklace.

Answer 1

R.E.E image

As (ABCDEA) & (AEDCBA) both are

some path $\because$ necklace are

indistinguishable.

$\therefore$ By using circular permutat${}^n$ $=\frac{(n-1)!}{2}$

$=\frac{4!}{2}=12$