Concise Mathematics>Chapter 10 - Arithmetic Progression>EXERCISE>Q 14

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The sum of the $2^{nd}$ term and the $7^{th}$ term of an A.P. is $30 .$ If its $15^{th}$ term is $1$ less than twice of its $8^{th}$ term, find the A.P.

Important Questions on Arithmetic Progression

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IMPORTANT

Concise Mathematics>Chapter 10 - Arithmetic Progression>EXERCISE>Q 15

In an A.P., if

m^{th}

term is

n

and

n^{th}

term is

m,

show that its

r^{th}

term is

(m + n - r) .

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Concise Mathematics>Chapter 10 - Arithmetic Progression>EXERCISE>Q 16

Which term of the A.P.

3, 10, 17,

........ will be

84

more than its

13^{th}

term ?

MEDIUM

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Concise Mathematics>Chapter 10 - Arithmetic Progression>EXERCISE>Q 1

Find the sum of the first

22

terms of the A.P. :

8, 3, - 2,

.......

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Concise Mathematics>Chapter 10 - Arithmetic Progression>EXERCISE>Q 2

How many terms of the A.P. :

24, 21, 18

..........must be taken so that their sum is

78 ?

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

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

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

Find the sum of :

All odd natural numbers less than $50 .$

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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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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.