Answer
$200,220,240,260,280,300$
Work Step by Step
Formula to calculate the nth term of an arithmetic sequence is: $a_n=a_1+d(n-1)$
Here, $a_1: $ First term and $d=$ common difference
$a_1=200+20(1-1)=200$; $a_2=200+20(2-41)=220$;$a_3=200+20(3-1)=240$;$a_4=200+20(2-1)=260$;
$a_5=200+20(5-1)=280$;$a_6=200+20(6-1)=300$
Hence, the first six terms are: $200,220,240,260,280,300$
