Math, asked by anujbalodi96, 11 months ago

Find the sum of of the A.P. 500, 520, 540 up to 84 terms.

Answers

Answered by sundarkum71

1

Answer:

a=500

d=20

an=a+(n-1)d

a84=500+(84-1)20

=500+83x20

a84=2160=L

sn=n/2(a+L)

=84/2(500+2160)

sn=111720

Previous Question

Next Question

Similar questions

Math, 6 months ago

What is percentage? What is the need of studying percentage, explain? Ram is a fruit seller. He bought 50 dozen bananas for Rs 135. Five dozen bananas could not be sold because they were rotten. He wants to earn 20% profit on remaining bananas to cover the loss. Find out the selling price of remaining bananas. Plz tell!!!! Its very urgent!!

Hindi, 6 months ago

बेठक में फ़श पर कालीन बिछा है। इसके ऊपर सोफा सेट रखा है। कोने में तिपाही पर फूलदान सज़ा है। दूसरे कोने में टेबल लैंप रखा है। कमरे के बीच मे शीशे की मेज़ रखी है। मेज़ पर अखबार और पत्रिकाएंं रखी हैं। दीवार पर दो सुंदर पेंटींग टंगी हुई है। दिए गए विवरण के आधार पर चिऋ बनाए...

Math, 6 months ago

the first and the last term of an AP are 5 and 45 .if the sum of all its terms is 400 .find the comman difference...

Science, 11 months ago

summary of the chapter my childhood class 9...

Math, 11 months ago

find out the third picture...

Math, 1 year ago

in parellogram ABCD,if angle A=65 find angle B...

India Languages, 1 year ago

Add 10 katva and make words...

Math, 1 year ago

Ram went to purchase 10 ball pens marked at Rs 6 per ballpen find the price paid by Ram if he pays a sale tax of 12% please it is urgent...