Math, asked by Acinashshinde, 1 year ago

The sum of first n terms of an A.P.is n/2(3n+13) find the 30th term

Answers

Answered by MANKOTIA

5

Tn=Sn-Sn-1=n/2(3n+13)-[n-1/2{3(n-1)+13}] now please solve. then put n= 30.

Previous Question

Next Question

Similar questions

Physics, 8 months ago

.Young’s modulus of steel is 19× 10 ^10 N/m^ 2. Express it in dynes /cm^2. Here dynes is the C.G.S unit of force.

Physics, 8 months ago

the significant figure of the number12.00516!? a.5 b.2c.7d.4?

English, 8 months ago

make sentences to bring out the difference between the following HOMOGRARH HOMOPHONES.1 ) sea-see...

English, 1 year ago

inside a Square Garden of side 158 m, a road 4 m wide is built all around .what is the area of the remaining part of the garden...

Environmental Sciences, 1 year ago

write down the name of at least one ideal person from at least five states of india...

English, 1 year ago

an 2 min. oral "the only thing that hard luck is hard work"...

English, 1 year ago

Explain the line,`spell for the aeons to come in the bazaars of Hyderabad...

Social Sciences, 1 year ago

how many degrees difference is there between -5 degrees and 5degrees...