MEDIUM
JEE Main/Advance
IMPORTANT
Earn 100

The sum to infinity of the series is
(a)
(b)
(c)
(d)

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Important Questions on Progression and Series
MEDIUM
JEE Main/Advance
IMPORTANT
A person is to count currency notes. Let denotes the number of notes he counts in the minute. If and are in with common difference , then the time taken by him to count all notes, is

MEDIUM
JEE Main/Advance
IMPORTANT
A man saves in each of the first three months of his service. In each of the subsequent months, his savings increases by more than the savings of immediately previous month. His total saving from the start of service will be after

HARD
JEE Main/Advance
IMPORTANT
Statement 1: The sum of the series is
Statement 2: for any natural number

EASY
JEE Main/Advance
IMPORTANT
If times the term of an A.P with non-zero common difference equals the times its term, then the term of this A.P is:

HARD
JEE Main/Advance
IMPORTANT
The sum of first terms of the sequence is

HARD
JEE Main/Advance
IMPORTANT
If , then is equal to

HARD
JEE Main/Advance
IMPORTANT
If is the A.M. of two distinct real numbers and and and are three geometric means between and , then equals

MEDIUM
JEE Main/Advance
IMPORTANT
The sum of first terms of the series is
