1.

यदि `a+b=1` और `a^(3)+b^(3)+3ab=k` है तो `k` का मान ज्ञात करें।A. 1B. 3C. 5D. 7

Answer» Correct Answer - A
`a+b=1`
By cubing
`a^(3)+b^(3)+3ab(a+b)=1^(3)`
`a^(3)+b^(3)+3ab=1(a+b=1)`
`a^(3)+b^(3)+3ab=k`
From above both equations
`k=1`


Discussion

No Comment Found

Related InterviewSolutions