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

1.	17 ,22,27,33....the sum of first 20 tearm the siries is
Answer» 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»

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

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

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