Concise Mathematics>Chapter 10 - Arithmetic Progression>EXERCISE>Q 19

HARD

10th ICSE

IMPORTANT

Earn 100

Which term of the $A . P .$ $105, 101, 97, . . . . . . . . .$ is the first negative term?

Important Questions on Arithmetic Progression

HARD

10th ICSE

IMPORTANT

Concise Mathematics>Chapter 10 - Arithmetic Progression>EXERCISE>Q 20

How many three digit numbers are divisible by

7 ?

HARD

10th ICSE

IMPORTANT

Concise Mathematics>Chapter 10 - Arithmetic Progression>EXERCISE>Q 21

Divide

216

into three parts which are in

A . P .

and the product of two smaller parts is

5040 .

HARD

10th ICSE

IMPORTANT

Concise Mathematics>Chapter 10 - Arithmetic Progression>EXERCISE>Q 22

Can

2 n^{2} - 7

be the

n^{th}

term of an

A . P . ?

Explain.

HARD

10th ICSE

IMPORTANT

Concise Mathematics>Chapter 10 - Arithmetic Progression>EXERCISE>Q 23

Find the sum of the

A . P . 14, 21, 28, . . . . . . . . . . . . 168 .

HARD

10th ICSE

IMPORTANT

Concise Mathematics>Chapter 10 - Arithmetic Progression>EXERCISE>Q 24

The first term of an

A . P .

is

20

and the sum of its first seven terms is

2100;

find the

31^{st}

term of this

A . P .

HARD

10th ICSE

IMPORTANT

Concise Mathematics>Chapter 10 - Arithmetic Progression>EXERCISE>Q 25

Find the sum of last 8 terms of the $A . P .$ $- 12, - 10, - 8, . . . . . . . . . . . . . . . . 58 .$