If the sum of first 7 terms of an AP is ...

If the sum of first 7 terms of an AP is 49 and that of 17 terms is 289, find the sum of first n terms.

Text Solution

AI Generated Solution

Topper's Solved these Questions

SAMPLE PAPER 2019
X BOARD PREVIOUS YEAR PAPER ENGLISH|Exercise SECTION-C|5 Videos

Similar Questions

Explore conceptually related problems

If the sum of 7 terms of an A.P. is 49 and that of 17 terms is 289, find the sum of n terms.

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.

The sum of first 8 terms of an A.P. is 64 and that of first 15 terms is 225. Find the sum of its first 17 terms.

The sum of 8 terms of an A.P. is 64 and sum of 17 terms is 289. Find the sum of its 'n' terms.

If sum of first 6 terms of an AP is 36 and that of the first 16 terms is 256 , then find the sum of first 10 terms.

The sum of first 7 terms of an A.P. is 10 and that of next 7 terms is 17. Find the progression.

The sum of first p- terms terms of an A.P. is q and the sum of first q terms is p, find the sum of first (p + q)

If the sum of first 20 terms of an A.P. is same as the sum of its first 28 terms, find the sum of its 48 terms.

If the sum of the first 14 terms of an AP is 1050 and its first term is 10 , find the 20th term .

X BOARD PREVIOUS YEAR PAPER ENGLISH-X Boards-All Questions

Solve for: 1/(2a+b+2x)=1/(2a)+1/b+1/(2x)
Text Solution
|
Sum of the areas of two squares is 400 cm. If the difference of their ...
Text Solution
|
If the sum of first 7 terms of an AP is 49 and that of 17 terms is ...
Text Solution
|
Prove that the tangent at any point of circle is perpendicular to the ...
Text Solution
|
l and m are two parallel tangents to a circle with centre O, touching...
Text Solution
|
The angle of elevation of the top of a building from the foot of the t...
Text Solution
|
A group consists of 12 persons, of which 3 are extremely patient, othe...
Text Solution
|
Three vertices of a parallelogram ABCD are A(3,-4),B(-1,-3)a n dC(-6,2...
Text Solution
|
Prove that : (1 + cot A + tan A) (sin A — cos A) = sin A tan A — cot ...
Text Solution
|
water is flowing at the rate of 2.52 km/h through a cylindrical pipe i...
Text Solution
|
A bucket open at the top, and made up of a metal sheet is in the form ...
Text Solution
|
Prove that : (1 + cot A + tan A) (sin A — cos A) = sin A tan A — cot ...
Text Solution
|
Without using trigonometric tables, evaluate the following:- 2(cos58^@...
Text Solution
|
If the coordinates of the mid-points of the sides of a triangle are (3...
Text Solution
|
If the coordinates of the mid-points of the sides of a triangle are (3...
Text Solution
|
In Figure 2, AD | BC. Prove that AB^2 + CD^2 = BD^2 + AC^2.
Text Solution
|
In Fig. 12.33, ABC is a quadrant of a circle of radius 14 cm and a ...
Text Solution
|
A peacock is sitting on the top of a pillar, which is 9m high. From a ...
Text Solution
|
A peacock is sitting on the top of a pillar, which is 9m high. From a ...
Text Solution
|
The angle of elevation of a jet plane from a point A on the grund is 6...
Text Solution
|