Question

the number of ways in which 8 different beads be strung on a necklace is​

Answer 1

Answer:

2520

Step-by-step explanation:

Here 7 beads of different colors taken all at a time can be arranged in (8−1)!=7! ways along a circle.

Further in the case of formation of necklace, the clockwise and anti - clockwise arrangements are same.

Hence, the required numbers formed =  

21×7!=  2 1

​

(5040)=2520