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Let S(n) denotes the number of ordered p...

Let `S(n)` denotes the number of ordered pairs `(x,y)` satisfying `1/x+1/y=1/n,AA ,n in N` , then find `S(10)` .

A

3

B

6

C

9

D

12

Text Solution

Verified by Experts

The correct Answer is:
C
`because 10^(2)=2^(2)*5^(2)`
`thereforeS(10)=3xx3=9`
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