In how many ways can 4 beads out of 6 different beads be strung into a ring -

Options

A. 45
B. 24
C. 360
D. 180

Answer

A

Explanation

In this case a clockwise and corresponding anticlockwise ordered will give the same circular permutation. So the required number
`(""^(6)P_(4))/(4.2)` = `(6.5.4.3)/(4.2) = 45`
Ans.1