Math, asked by lchandu279, 8 months ago

if n term of A. P is An=4-7n find the sum of first 20th term​

Answers

Answered by sukesh1215
0

Answer:

-136

Step-by-step explanation:

lf an=4-7n

so a20=4-7(20)

a20=4-140

a20=-136

Attachments:
Similar questions