If a1, a2, a3 are in airthemetic as well as geometric progression then which of the following is/are correct?
Posted: Thu Jul 14, 2022 9:00 am
a) 2a2 = a1 + a3
b) a2 = (a1a3)1/2
c) a2 – a1 = a3 -a2
d) All of the mentioned are correct
b) a2 = (a1a3)1/2
c) a2 – a1 = a3 -a2
d) All of the mentioned are correct