1.

`[(1+1/(10+1/10))(1+1/(10+1/10))-(1-1/(10+1/10))(1-1/(10+1/10))]-:[(1+1/(10+1/10))+(1-1/(10+1/10))]` का सरलीकृत मान है?A. `20/101`B. `100/101`C. `2`D. `90/101`

Answer» Correct Answer - A
`([1+1/(10+1/10)][1+1/(10+1/10)]-[1-1/(10+1/10)][1-1/(10+1/10)])`
`-:([1+1/(10+1/10)]+[1-1/(10+1/10)])`
Let `[1+1/(10+1/10)]=a,[1-1/(10+1/10)]=b`
`implies (a^(2)-b^(2))-: (a+b)=a-b=?`
`implies a=1+10/101implies 111/101`
`implies b=1-10/101implies 91/101`
`a-b=111/101-91/101=20/101implies20/101`


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