The sum of the series20C0−20C1+20C2−20C3+…−…+20C10 is:
Connecting you to a tutor in 60 seconds.
Get answers to your doubts.
Find the term independent of x in the expansion of (23x2−3x1)6.
Find the following sum:
Find the cube root of 217, correct to two decimal places.
Find the coefficient of x4
in the expansion of (2−x+3x2)6˙
Find the sum of the series 15C0+15C1+15C2++15C7˙
Find the 13thterm in the expansion of (9x−3x1)18,x=0
Prove that r=0∑ss=1∑nnCsnCr=3n−1.
Show that the middle term in the expansion of (1+x)2nis n!220.127.116.11n−1˙˙2nxn2nxn, where n is a positive integer.