Question

a20=10+(20-1)10 arthimetic progression

Answer 1

hi there,
a20=10+(20-1)10
a20=10+190
a20=200
a=10
Therefore the value is a=10

Answer 2

Answer:

Hi friend, I don't knew what you want..

But, my thought you wants the value of first term..

Step-by-step explanation:

$a_{20} =10+(20-1)10\\a_{20} =10+(19)10\\a_{20} =10+190\\a_{20} =200\\so..a =10 \\d =10 \\n=20$

Hope my answer will help you.

Mark my answer as a brainliest answer..