JEE MATHEMATICS MCQ: SEQUENCE OF SERIES

1 Easy

1 of 1

Application +4 | -1

Let

{a_1},\,\,{a_2},\,\,{a_3}.......

be an A.P. If

\frac{{{a_1} + {a_2} + ... + {a_{10}}}}{{{a_1} + {a_2} + ... + {a_p}}} = \frac{{100}}{{{p^2}}},p \ne 10,

then

\frac{{{a_{11}}}}{{{a_{10}}}}

is equal to

View answer and explanation

Correct option: C

\frac{{21}}{{19}}

Option C (

\frac{{21}}{{19}}

) is correct because it is the ratio of a11 to a10, derived from the given condition on the sum of the arithmetic progression.

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