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CBSE Notes 2011-2012 » X-Mathematics-Term2

# Arithmetic Progressions

## If a clock strikes once at one O'clock, twice at two O'clock, thrice at 3 O'clock and so on and agai...

Multiple choice question

If a clock strikes once at one O'clock, twice at two
O'clock, thrice at 3 O'clock and so on and again once at
one O'clock and so on, then how many times will the bell
be struck in the course of 2 days ?

## How many terms of an AP must be taken for their sum to be equal to 120 if its third term is 9 and th...

Multiple choice question

How many terms of an AP must be taken for their sum
to be equal to 120 if its third term is 9 and the difference
between the seventh and second term is 20 ?

## Four numbers are inserted between the numbers 4 and 39 such that an AP results. Find the biggest of ...

Multiple choice question

Four numbers are inserted between the numbers 4 and
39 such that an AP results. Find the biggest of these four
numbers

## A and B set out to meet each other from two places 165 km apart. A travels 15 km the first day, 14 k...

Multiple choice question

A and B set out to meet each other from two places
165 km apart. A travels 15 km the first day, 14 km the
second day, 13 km the third day and so on. B travels
10 km the first day, 12 km the second day, 14 km the
third day and so on. They will meet after

## If in any decreasing arithmetic progression, sum of all its terms, except the first term is equal to...

Multiple choice question

If in any decreasing arithmetic progression, sum of all
its terms, except the first term is equal to - 36, the sum of
all its terms, except for the last term is zero and the
difference of the tenth and the sixth term is equal to - 1 6 ,
then first term of the series is

## The sum of all terms of the arithmetic progression having ten terms except for the first term is 99 ...

Multiple choice question

The sum of all terms of the arithmetic progression having
ten terms except for the first term is 99 and except for
the sixth term 89. Find the third term of the progression
if the sum of the first term and the fifth term is equal to
10.