Q.

The term independent of x in the expansion of (1x)2.x+1x10  is

see full answer

Start JEE / NEET / Foundation preparation at rupees 99/day !!

21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!
An Intiative by Sri Chaitanya

a

11C5

b

10C5

c

10C4

d

10C3

answer is A.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

(1x)2.x+1x10

Question Image

consider

x+1x10

Tr+1=10Crx10r1xr
=10Crx102r102r=0r=5

 const term=10C5

For 1x term 102r=1

r=112(not  possible)

For 1x2 term 102r=2

12=2rr=61x2coefficient=10C6

 Independent term =1×10C5+1×10C6

=10C5+10C6

=11C6[nCr+nCr1=n+1Cr]

=11C5

Watch 3-min video & get full concept clarity

tricks from toppers of Infinity Learn

score_test_img

Get Expert Academic Guidance – Connect with a Counselor Today!

whats app icon
The term independent of x in the expansion of (1−x)2.x+1x10  is