Question

pls answer
i will mark brainiest pls...​

Answer 1

Step-by-step explanation:

a)

= (2^1-1)+(2^2-1)+(2^3-1).........(2^10-1)

=1+3+....

= 2036

b)

=(2+3^1)+(2+3^2)+.....

= 256741

Hope it helps. Mark as Brainliest.