Answer: A3=37,A7=73 a+2d=37,a+6d=73 on solving both equations 4d=36 d=9 substitute d=9 in a+2d=37 a+18=37 a=19 A30=a+29d A30=19+29(9) A30=19+261 A30=280 Reply

Answer:A3=37,A7=73

a+2d=37,a+6d=73

on solving both equations

4d=36

d=9

substitute d=9 in a+2d=37

a+18=37

a=19

A30=a+29d

A30=19+29(9)

A30=19+261

A30=280