Find the sum of first twenty terms of Ar...

Find the sum of first twenty terms of Arithmetic series 2 +7+12 + `cdots ` using suitable formula.

Topper's Solved these Questions

S.S.L.C ANNUAL EXAMINATION QUESTION PAPER MARCH- 2019 ( WITH ANSWERS )
SUBHASH PUBLICATION|Exercise II. Answer the following|38 Videos
REAL NUMBER
SUBHASH PUBLICATION|Exercise EXERCISE 8.4|19 Videos
SOME APPLICATIONS OF TRIGONOMETRY
SUBHASH PUBLICATION|Exercise EXERCISE 9.1|16 Videos

Similar Questions

Explore conceptually related problems

Find the sum first 'n' terms of the series (3+7+13+21+31+..) ?

Find the sum to n terms of the series 5+ 11 + 19 + 29+ 41+ ……

Find the sum to n terms of the series , 5+11+19+29+41…

Write the formula to find the sum of first n terms of an Arithmetic progression, whose first term is a and the last term is a_n .

Sum to n terms of the series 2+6+12+20+.. is,

Find the sum of n terms of the series 1+4/5+7/(5^2)+10/(5^3)+dot

Find the sum upto n terms of the series 1+4+7+10+13+16+"...." .

SUBHASH PUBLICATION-S.S.L.C ANNUAL EXAMINATION QUESTION PAPER MARCH- 2019 ( WITH ANSWERS )-II. Answer the following

Find the value of the discriminant of the quadratic equation 2x^(2)-4x...
Text Solution
|
Write the foumula to calculate the curved surface area of the frustum...
Text Solution
|
Find the sum of first twenty terms of Arithmetic series 2 +7+12 + cdot...
Text Solution
|
In Delta ABC , AD botBC and AD^(2)= BD xx CD. Prove that AB^(2) + AC^(...
Text Solution
|
In Delta ABC , DE || BC . If AD= 5 cm , BD = 7 cm and AC = 18 cm , fi...
Text Solution
|
In the given figure PQ || RS , prove that Delta POQ~Delta SOR.
Text Solution
|
Solve the following pair of linear equations by any suitable method. ...
Text Solution
|
In the figure , ABCD is a square of side 14 cm. A, B, C and D are the ...
Text Solution
|
Draw a circle of radius 4 cm and construct a pair of tangents such tha...
Text Solution
|
Find the co - ordinates of points which divides the line segment joini...
Text Solution
|
Prove that 3+2sqrt(5) is an irrational number .
Text Solution
|
The sum and product of the zeroes an a quadratic polynomial P (x) = ax...
Text Solution
|
Find the quotient and the remainder when P (x) = 3x^(3)+ x^(2)+2x+5 is...
Text Solution
|
Solve 2x^(2)-5x+3 = 0 by using formula.
Text Solution
|
The length of a rectangular field is 3 time its breadth . If the area ...
Text Solution
|
If sin theta = (12)/(13) find the values of cos theta and tantheta. " ...
Text Solution
|
If sqrt(3) "tan" theta = 1 "and " theta is acute find the value of sin...
Text Solution
|
Prove that ((1+cos theta)/(1-cos theta))=("cosec"theta + "cot"theta)^(...
Text Solution
|
A cubical die numbered from 1 to 6 are rolled twice . Find the probabi...
Text Solution
|
The radii of two circular ends of a frustum of a cone shaped dustbin a...
Text Solution
|