Question

find the total number of ways in which 8 different coloured beads can be strung together to form a necklace​

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 =

2

1

×7!=

2

1

(5040)=2520