Home
Class 12
MATHS
If x + y = 1, then sum(r-0)^n r nCr x^...

If `x + y = 1`, then `sum_(r-0)^n r nC_r x^r y^(n-r)` equals

A

`1`

B

`n`

C

`nx`

D

`ny`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • BINOMIAL THEOREM

    MTG-WBJEE|Exercise WB JEE WORKOUT ( CATEGORY 3 : One or More than One Option Correct Type (2 Marks) )|10 Videos

  • BINOMIAL THEOREM

    MTG-WBJEE|Exercise WB JEE Previous Years Questions ( CATEGORY 1 : Single Option Correct Type (1 Mark))|13 Videos

  • BINOMIAL THEOREM

    MTG-WBJEE|Exercise WB JEE Previous Years Questions ( CATEGORY 1 : Single Option Correct Type (1 Mark))|13 Videos

  • APPLICATION OF INTEGRALS

    MTG-WBJEE|Exercise WE JEE PREVIOUS YEARS QUESTIONS (CATEGORY 3 : ONE OR MORE THAN ONE OPTION CORRECT TYPE)|3 Videos

  • CIRCLES

    MTG-WBJEE|Exercise WB JEE PREVIOUS YEARS QUESTIONS (CATEGORY 3 : One or More One Option Correct Type)|2 Videos

Similar Questions

Explore conceptually related problems

If x+y=1, then sum_(r-0)^(n)rnC_(r)x^(r)y^(n-r) equals

sum_(r=0)^(n)nC_(r)sin rx*cos(n-r)x s equal to

If x+y=1, prove that sum_(r=0)^(n)nC_(r)x^(r)y^(n-r)

Find sum_(r=0)^n(r+1)*"^nC_rx^r

sum_(r=0)^(n)nC_(r)(sin rx) is equal to

sum_(r=1)^n r (n-r +1) is equal to :