Subject: Maths, asked on 26/11/10

Find the term independent of x in the expansion of (2x - 1/x)10

Subject: Maths, asked on 31/8/15

the second, third and fourth term of the binomial expansion (x+a)n  (n is actually (x+a)raised to the power n) are 240, 720 and 1080. find x, a and n.

Subject: Maths, asked on 20/11/11

If the coeffients of 5th, 6th & 7th terms in expansion of (1+x)n are in AP, then find values of n???

Subject: Maths, asked on 2/12/12

the coefficient of x4 in the expansion of (1+x+x2+x3)11 is :a) 900 b)909c) 990 d)999

Subject: Maths, asked on 31/10/12

If 3rd,4th,5th,6th term in the expansion of (x+alpha)n be respectively a,b,c and d, prove that b2-ac/c2-bd=4a/3c..

Subject: Maths, asked on 27/11/12

if 4th term in the expansion of ( ax+1/x)n is 5/2, then the values of a and n :a) 1/2,6 b) 1,3c) 1/2,3

Subject: Maths, asked on 12/12/10

The coefficients of three consecutive terms in the expansion of(1+x)n are in the ratio 1:7:42. find  n.

Subject: Maths, asked on 17/12/11

Show that the middle term in the expansion of(1+x)raise to power 2n is = 1.3.5.......(2n-1) . 2n.xraise to power n upon n! , where nis a +ve integer.

Subject: Maths, asked on 8/10/13

Using Binomial theoram, prove that 23n - 7n-1 is divisible by 49 where n is a Natural number

Subject: Maths, asked on 27/12/11

solve this    if the coefficients of (r-5)th and (2r-1)th term in the expansion of (1+x)34 are equal, fiind r

Subject: Maths, asked on 26/11/14

Find the number of terms in the expansion: (1+2x+x^2)^20

Subject: Maths, asked on 20/12/14

find the term independent of x in the expansion of (1 + x + 2x3)((3/2)x2 - 1/3x)9.

Subject: Maths, asked on 10/10/12

using binomial therorem, 32n+2-8n-9 is divisible by 64, n belongs to N

Subject: Maths, asked on 27/10/15

if in the expansion of ( 1+x)^ m (1 -x) ^n, the coefficients of x and x^2 are 3 and -6 then n=?

Subject: Maths, asked on 28/11/13

Find the value of nC0 - nC1 + nC2 - nC3 +.................+(-1)^n nCn

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