Question

1+⅟2+⅟4+⅟8+……….to 12 terms

Answer 1

Answer:

here 1st term a =1

common ratio is1/2÷1=1/2

sum of 12th terms is

a(r^n-1)/r-1

=1(1/2^12 -1)/(1/2-1)

=1/4096 -1/-1/2

=4095×2/4096

=8190/4096