If nC0−nC1+nC2−nC3+…+(−1)r⋅nCr=28 , then n is equal to ……

Click here to view the solution.

Get 2 FREE Instant-Explanations on Filo with code FILOAPP

If {}^{{{n}}}{C}_{{{0}}}-^{{{n}}}{C}_{{{1}}}+^{{{n}}}{C}_{{{2}

Question

If $^{n} C_{0} -^{n} C_{1} +^{n} C_{2} -^{n} C_{3} + \dots + (- 1)^{r} \cdot^{n} C_{r} = 28$ , then $n$ is equal to ……

Views: 945 students

Found 8 tutors discussing this question

Lucas Discussed

^{n} C_{0} -^{n} C_{1} +^{n} C_{2} -^{n} C_{3} + \dots + (- 1)^{r} \cdot^{n} C_{r} = 28

, then

n

is equal to ……

10 mins ago

Discuss this question LIVE

10 mins ago

Question Text

^{n} C_{0} -^{n} C_{1} +^{n} C_{2} -^{n} C_{3} + \dots + (- 1)^{r} \cdot^{n} C_{r} = 28

, then

n

is equal to ……