AOA


Here is another

2,12,30,56,...

now there is no common difference or any apparent symmetry

If u anlyse then

2=1*2,
12=3*4,
30=5*6,
56=7*8

hence the next member will b 90=9*10

If someone wants to do practice then consult ISSB books or Mathematics book of Ist year. very helpful.

Regards