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JEE MAIN 2026 Crash Course
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दों संख्याओं के योग को अलग-अलग दोनों संख्या से गुणा कर दिया जाता है इस तरह गुणनफल क्रमशः 247 तथा 114 आता है तो उन संख्याओं का योग ज्ञात करें।
A. 19
B. 20
C. 21
D. 23

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Correct Answer - A
Let the numbers `x` and `y`
`x(x+y)=247`
`x^(2)+xy=247`………….i
`y(x+y)=114`
`xy+y^(2)=114`………….ii
Adding i and ii
`x^(2)+y^(2)=2xy=361`
`(x+y)^(2)=(19)^(2)`
`x+y=19`
Sum of the no is `x+y=19`

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