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CBSE Notes 2011-2012 » XI-Maths

Binomial Theorem

Find a if the coefficients of x2 and x3 in the expansion of (3 + ax)9 are equal.

Short answer question

Find a if the coefficients of x2 and x3 in the expansion of (3 + ax)9 are equal.

For what value of m the coefficients of the (2m + l)th and (Am + 5)th terms, in the expansion of (1 ...

Short answer question

For what value of m the coefficients of the (2m + l)th and (Am + 5)th terms, in the expansion of (1 +x)10, are equal ?

Let n be a positive integer if the coefficients of 2nd, 3rd, 4th terms in the expansion of (1+x)n ar...

Short answer question

Let n be a positive integer if the coefficients of 2nd, 3rd, 4th terms in the expansion of (1+x)n are in A. P., find the value of n.

The coefficients of (r - 1)th, rth and (r + 1)th terms in the expansion of (1 + x)n are in the ratio...

Short answer question

The coefficients of (r - 1)th, rth and (r + 1)th terms in the expansion of (1 + x)n are in the ratio of 1:3:5 Find n and r.

The 2nd, 3rd and 4th terms in the expansion of (x + y)n are 240, 720 and 1080 respectively. Find the...

Short answer question

The 2nd, 3rd and 4th terms in the expansion of (x + y)n are 240, 720 and 1080 respectively. Find the values of x, y and n.

Find the value of r if the coefficients of (2r + 4)th and (r - 2)th terms in the expansion of (1 + x...

Short answer question

Find the value of r if the coefficients of (2r + 4)th and (r - 2)th terms in the expansion of (1 + x)18 are equal

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