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Q.


Rationalize the denominator of 1 7  .

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a

7 7  

b

7 7 7  

c

2 7 7  

d

5 7 7   

answer is A.

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Detailed Solution

Given that 1 7  .
Rationalizing the denominator:
For rationalizing the denominator, we will multiply the numerator and denominator by the conjugate of the denominator to remove the radical sign from the denominator.
Multiplying the numerator and denominator by √7:
1 7 =  (1× 7 )   ( 7 × 7 )  
Simplify the numerator and denominator:
  1 7  =  7 7   Therefore, the correct option is 1.
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