1.

यदि `a/(1-2a)+b/(1-2b)+c/(1-2c)=1/2`, हो तो `1/(1-2a)+1/(1-2b)+1/(1-2c)` का मान क्या है?A. 1B. 2C. 3D. 4

Answer» Correct Answer - D
`a/(1-2a)+b/(1-2b)+c/(1-2c)=1/2`
Multiply by 2 both side
`implies (2a)/(1-2a)+(2a)/(1-2b)+(2c)/(1-2c)=1`
Adding 3 both side
`implies 1+(2a)/(1-2a)+1+(2b)/(1-2b)+1`
`(2c)/(1-2c)=1+3`
`implies 1/(1-2a)+1/(1-2b)+1/(1-2b)=4`


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