Question

find the sum of first n terms of series p,3p,5p....

Answer 1

p, 3p,5p.....
a=p. d=2p
Sn=n/2(2a+(n-1)d)
Sn=n/2(2p+(n-1)2p)
Sn=n/2(2p+2p-2)
Sn=n/2*2(2p-1)
Sn=n(2p-)
Hope it helped you

Answer 2

Hope this will help you