JEE MATHEMATICS MCQ: SEQUENCE OF SERIES

1 Easy

1 of 1

Application +4 | -1

\mathrm{H}_1, \mathrm{H}_2, \mathrm{H}_3 \ldots . \mathrm{H}_{10}

are the harmonic means between 1 and

\frac{1}{a}

, then

\frac{\mathrm{H}_1}{\mathrm{H}_{10}}=

View answer and explanation

Correct option: C

\frac{10 a+1}{10+a}

Option C (

\frac{{10 a+1}}{{10+a}}

) is correct because it represents the ratio of the first and last harmonic means in the given series.

More Questions from SEQUENCE OF SERIES

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}