1.

`sqrt(?)-11=sqrt(1521)`A. `sqrt(2500)`B. `(28)^(2)`C. `sqrt(28)`D. None of these

Answer» Correct Answer - D
`sqrt(?) -11=sqrt(1521)`
`rArr sqrt(?)-11=39`
`rArr sqrt(?)= 39 + 11=50`
`:. ?=(50)^(2)=2500`


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