Fill In The Blanks[1 Marks ]

Questions

5 questions · self-marked practice — reveal the answer and mark yourself.

Question 11 Mark

The number of terms in the expansion of $(x+a)^n-(x$ $-a)^n$ is _________ , where $n$ is a positive even integer.

Answer

$\frac{n}{2}$

Question 21 Mark

The number of terms in the expansion of $(a+b+c)^n$ is ________ , where $n$ is a positive integer.

Answer

$\frac{(n+1)(n+2)}{2}$

Question 31 Mark

The number of terms in the expansion of $(2 x-3 y)^9$ is __________.

Answer

$10$

Question 41 Mark

The number of terms in the expansion of $(a+b)^n$ is _________ , where $n$ is a positive integer.

Answer

$(n+1)$

Question 51 Mark

The coefficient ${ }^n C _r$ in the Binomial Theorem is called ________.

Answer

binomial coefficient

Maths Fill In The Blanks[1 Marks ]