Math, asked by ayushthakur6572, 1 month ago

if ap is 9,4,-1, -6, -11 then find s23

Answers

Answered by navya14in

0

Answer:

a = 9

d = -5

n = 23

S23 = ?

S23 = n/2 (2a + (n-1) d)

23/2 (2*9 + 22(-5))

23/2 (18-110)

23/2 * -92

23 * (-46)

-1058

Step-by-step explanation:

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