7. संख्या श्रृंखला (Number Series)

Questions :

2, 6, 12, 20, ?

Options :

• 24
• 30
• 32
• 36

correct answer : b)

Explaination:
Logic/Rule: n (n+1)
1 (1+1) = 2
2 (2+1) = 6
3 (3+1) = 12
4 (4+1) = 20
5 (5+1) = 30