Concise Mathematics>Chapter 10 - Arithmetic Progression>EXERCISE>Q 3

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10th ICSE

IMPORTANT

Earn 100

Find the sum of $28$ terms of an A.P. whose $n^{th}$ term is $8 n - 5 .$

Important Questions on Arithmetic Progression

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10th ICSE

IMPORTANT

Concise Mathematics>Chapter 10 - Arithmetic Progression>EXERCISE>Q 4

Find the sum of :

All odd natural numbers less than $50 .$

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10th ICSE

IMPORTANT

Concise Mathematics>Chapter 10 - Arithmetic Progression>EXERCISE>Q 4

Find the sum of :

First $12$ natural numbers each of which is a multiple of $7 .$

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10th ICSE

IMPORTANT

Concise Mathematics>Chapter 10 - Arithmetic Progression>EXERCISE>Q 5

Find the sum of first

51

terms of an A.P. whose

2^{nd}

and

3^{rd}

terms are

14

and

18

respectively.

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10th ICSE

IMPORTANT

Concise Mathematics>Chapter 10 - Arithmetic Progression>EXERCISE>Q 6

The sum of first 7 terms of an A.P. is

49

and that of first 17 terms of it is

289 .

Find the sum of first

n

terms.

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10th ICSE

IMPORTANT

Concise Mathematics>Chapter 10 - Arithmetic Progression>EXERCISE>Q 7

The first term of an A.P. is

5,

the last term is

45

and the sum of its terms is

1000 .

Find the number of terms and the common difference of the A.P.

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10th ICSE

IMPORTANT

Concise Mathematics>Chapter 10 - Arithmetic Progression>EXERCISE>Q 8

Find the sum of all natural numbers between

250

and

1000

which are divisible by

9

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10th ICSE

IMPORTANT

Concise Mathematics>Chapter 10 - Arithmetic Progression>EXERCISE>Q 9

The first and the last terms of an A.P. are

34

and

700

respectively. If the common difference is

18,

how many terms are there and what is their sum ?

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10th ICSE

IMPORTANT

Concise Mathematics>Chapter 10 - Arithmetic Progression>EXERCISE>Q 10

In an A.P., the first term is

25, n^{th}

term is -

17

and the sum of

n

terms is

132

. Find

n

and the common difference.