Home
Class 11
MATHS
The coefficients of three consecutive te...

The coefficients of three consecutive terms of `(1+x)^(n+5)` are in the ratio 5 : 10 : 14. Then n= _______

A

(420,18)

B

(380,19)

C

(380,18)

D

(380,18)

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Similar Questions

Explore conceptually related problems

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

2k+1, 13, 5k-3 are three consecutive terms of an A.P, then k=

The coeffcients of the (r-1)^th , r^th and (r+1)^th terms in the expansion of (x+1)^n are in the ration 1 : 3: 5 Find n and r.

The coefficient of T_(5) and T_(19) in expansion (1+x)^n are equal then n = 14.

Show that the coefficient of the middle term in the expansion of (1+x)^(2n) is equal to the sum of the coefficients of two middle terms in the expansion of (1 + x)^(2n-1)

If the coefficient of 2nd , 3rd and the 4th terms in the expansion of (1+x)^(n) are in AP, then the value of n is

Answer each question by selecting the proper alternative from those given below each question so as to make each statement true : The sum of first n terms of two Aps are in the ratio 5n + 4 , 9n + 6 . Then , the ratio of their 18th term is .......

If 4^(th) term of (ax+1/x)^(n) is 5/2 then find a and n .

The coefficient of x^(m) and x^n in the expansion of (1+x)^(m+n) are ...........

The sum of coefficients of the two middle terms in the expansion of (1+x)^(2n-1) is equal to (2n-1)C_(n)