Binomial TheoremMedium
Question
In the binomial expansion of (a - b)n, n ≥ 5 the sum of the 5th and 6th terms is zero. Then, a / b equals
Options
A.
B.
C.
D.
Solution
Given, T5 + T6 = 0
⇒ nC4an-4b4 - nC5an-5b5 = 0
⇒ nC4an-4b4 = nC5an-5b5
⇒
⇒ nC4an-4b4 - nC5an-5b5 = 0
⇒ nC4an-4b4 = nC5an-5b5
⇒
Create a free account to view solution
View Solution FreeMore Binomial Theorem Questions
The term independent of x in is -...In the binomial (21/3 + 3-1/3)n, if the ratio of the seventh term from the beginning of the expansion to the seventh ter...If (1 + x)n = C0 + C1x + C2x2 + .....+ Cnxn, then C0C2 + C1C3 + C2C4 + ......+ Cn-2 Cn is equal to -...The value of is equal to -...The number of seven digit integers, with sum of the digits equal to 10 and formed by using the digits 1, 2 and 3 only, i...