1.

`390.5 xx sqrt(?)=284xx2`A. `(256)^(2)`B. 16C. `sqrt(16)`D. 256

Answer» Correct Answer - D
`390.5xxsqrt(?)=284xx22`
`rArr sqrt(?)=(284xx22)/(390.5)=16`
`:. ?=16xx16=256`


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