If the ratio of the sum of $n$ terms of two $A P^{\prime} s$ is $2 n:(n+1)$, then ratio of their $8^{\text {th }}$ terms is-

JEE MATHEMATICS MCQ: SEQUENCE OF SERIES

1 Medium

1 of 1

Application +4 | -1

If the ratio of the sum of

n

terms of two

A P^{\prime} s

2 n:(n+1)

, then ratio of their

8^{\text {th }}

terms is-

View answer and explanation

Correct option: A

15: 8

Option A (15: 8) is correct because it is the ratio of the 8th terms obtained by substituting the appropriate value of n in the given ratio of sums.

Practice All Chapter MCQs →

A=\{1,2,3\}, B=\{3,4\}, C=\{4,5,6\}

{A} \cup({B} \cap {C})

A-(B \cap C)

(B \cup C)-A

a,b,c

a,x,b

b,y,c

{x^2},{b^2},{y^2}

P(x)=1-x+x^2-x^3+\ldots+x^{2012}

y

Q(y)=a_0+a_1 y+\ldots+a_{2012} y^{2012}

y=x-2

\sum\limits_{{i=0}}^{2012} a_i

\log \left(\frac{5 c}{a}\right), \log \left(\frac{3 b}{5 c}\right)

\log \left(\frac{a}{3 b}\right)

A P

a, b

G P

a, b, c

\frac{3}{4}