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The price of a necklace varies directly as the no. of pearls in it. Also it varies directly as the square root of radius of a pearl. The price of a necklace was Rs. 150. When it had 75 pearls each of radius 1 cm. Find the radius of the pearl of a neclace having 100 pearls whose cost is Rs. 600.

A

2

B

9

C

3

D

4

Text Solution

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The correct Answer is:
B
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