Math, asked by zaidcharoliya16, 4 months ago

what is the sum of first 20 terms of an A.P if a=4 and t20=36

Answers

Answered by Shinesrivastava2005

19

Answer:

400

Step-by-step explanation:

Sum = n/2( a + l )

where a is first term

l is last term i.e. l = t20

so applying it

20/2 ( 4 + 36 )

10(40)

400

Mark me as Brainliest

Previous Question

Next Question

Similar questions

Math, 2 months ago

what will be the answer to the following equation 4x ≥ 62...

Environmental Sciences, 2 months ago

ith the help of Betel and Tu एक देशी हिमीकृत दुग्ध पदार्थ is a Deshi freezing milk ...

French, 2 months ago

Complétez en utilisant les verbes suivantes au présent. (finir, regarder, acheter, être, avoir, aller, arriver, préférer, prendre, manger 1. Ce soir, nous ………. au cinéma. 2 Elle ……….. deux fils et une fille. 3 . Nous …………… dans la salle de classe. 4. Nous …………….. l'autobus.

Math, 4 months ago

. A car travelling at a uniform speed covers a distance of 540 km in 12 hours. If the car travels with the same uniform speed, find the distance covered by the car in: (b) 10 hours (a) 6 hours...

Business Studies, 4 months ago

विरुद्धार्थी शब्द 1 - निराश - 2- प्रसन्न - 3- विज्ञते - 4- प्रेम -...

Physics, 10 months ago

What is the solution of 625×10^-10/1.25...

Math, 10 months ago

if 7 Cos A = 8 find 15 cosec A - 8 sec B...

Math, 10 months ago

which is greater: (i) 2 $2 \frac{?}{?}$ ...