1.

`62^(2)-32^(2)+(?)^(2)=3144`A. 17B. 16C. 19D. None of these

Answer» Correct Answer - D
`(62+32)(62-32)+?=3144`
`rArr 94xx30+?^(2)=3144`
`rArr 2820+?^(2)=3144`
`rArr ?^(2)=3144-2820=324`
`:. ?=sqrt(324)=18`


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