Binomial Theorem

Question 1

Number of terms in the expansion of (x+y)^n

Answer 1

n+1

Question 2

Equidistant terms in binomial theorem nCr=?

Answer 2

nCr= nCn-r

Question 3

General term in binomial theorem Tr+1?

Answer 3

Tr+1= nCr.x^n-r.y^r

Question 4

Number of terms in (x+y+z)^n= ?

Answer 4

(x+y+z)^n= (n+1) (n+2)/ 2

Question 5

If n is even then middle term is ?

Answer 5

(n/2 + 1)th term

Question 6

If n is odd then the two equal middle terms are ?

Answer 6

(n+1/2)th and (n+3/2)th terms

Question 7

nCo= nCn = ?

Answer 7

1

Question 8

nCr + nCr-1= ?

Answer 8

nCr + nCr-1 = n+1Cr