Question

plz answer fast its important right answers will be marked as brainilist ​

Answer 1

Answer:

Step-by-step explanation:

5,11,17,23---------

a=5,d=11-5=6,n=51

an=a+(n-1)d

So a51=5+50*6

=5+300

=305

Answer 2

Answer:

51×6-1=305 this answer is three hundred five