Question

2. which of the following is
an A.P
A) 4, 9, 16, 25
c) 3,9,12,18
2, 4, 6,8​

Answer 1

4,9,16,25 is an A.P because all are perfect squares

3,9,12,18 is an not in A.P. because all are 3 multiples but 15 is missing

2,4,6,8 is an A.P because all are 2 multiples ..