Question

What should come in place of the question mark (?) in the given series? 80 100 122 146 172 200 ?

• A. 250
• B. 246
• C. 234
• D. 230

Answer 1

Answer:

D. 230

Series:
80, 100, 122, 146, 172, 200, ?

Find differences

100 − 80 = 20
122 − 100 = 22
146 − 122 = 24
172 − 146 = 26
200 − 172 = 28

Differences: 20, 22, 24, 26, 28 → increasing by +2

Next difference

28 + 2 = 30

Next term

200 + 30 = 230

Final Answer:

230