Question

plz answer with steps​

Answer 1

Answer:

01010101010011

Step-by-step explanation:

1-1-1-1-1-1-1-1

Answer 2

$\underline {\tt{\:n\: =\: 20}}$

$\bold{a_{20} }$

= 5 ( 20 ) + 4 = 104

$\bold{{a_{20}=104}}$