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Answer:
Correct option is
A
2520
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
Step-by-step explanation:
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