If $\frac{{3 + 5 + 7 + \ldots + n\;{\rm{terms}}}}{{5 + 8 + 11 + \ldots + 10\;{\rm{terms}}}} = 7,$ then the value of $n$ is

JEE MATHEMATICS MCQ: SEQUENCE OF SERIES

1 Easy

1 of 1

Application +4 | -1

\frac{{3 + 5 + 7 + \ldots + n\;\mathrm{terms}}}{{5 + 8 + 11 + \ldots + 10\;\mathrm{terms}}} = 7,

then the value of

n

View answer and explanation

Correct option: A

Option A (35) is correct because solving the equation derived from the arithmetic progression sum formula yields n = 35.

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}