20 terms of the series 2 + 6 +18 +.... of ap
Answers
Answered by
0
an=a+(n-1)d
an=2+(20-1)4...........(d=a2-a1=6-2=4)
an=2+19*4
=2+76
an=78
an=2+(20-1)4...........(d=a2-a1=6-2=4)
an=2+19*4
=2+76
an=78
Similar questions