Question

2,5_2,3,7_3 in arithmetic progression

Answer 1

2 5 3 2 3 7 4 3
5 -2 =3 3+2 =5. 7-3=4 4+3=7

Answer 2

here let first term a=2 and d be difference hence d=second term-first term=5-2=3, 2-5=-3, 3-2=1 as d is not same so it is not in Ap