Question

17 ,22,27,33....the sum of first 20 tearm the siries is​

Answer 1

Sn=

$\frac{n}{2} (2a + (n - 1)d$

this is the formulae for finding sum of series in ap

17,22,27,32

22-17= 5

27-22= 5

(it should be 32 ,,not 33)

common difference d=5

n=20,

n/2= 20/2 = 10

a= 17

S 20 = 10(2(17)+19×5)

10(34+95)

10×129

1290

Answer 2

Answer:

Hii

sorry, mu exam pai offline thili apanaka comments padhi nathili because mo id mo sanga chalau thila..

mu asila pare janili ki comments ban heichi ta sethi pai so sorry..