Question

What should come in place of the question mark (?) in the given series? 22 27 37 52 72 ?

• A. 100
• B. 94
• C. 98
• D. 97

Answer 1

Answer:

D. 97

Let’s look at the differences:

Series: 22, 27, 37, 52, 72, ?

Find differences

• 27 − 22 = 5

• 37 − 27 = 10

• 52 − 37 = 15

• 72 − 52 = 20

So the pattern is:
+5, +10, +15, +20 (increasing by 5 each time)

Next difference

Next = 25

Add to last term

72 + 25 = 97

Final Answer: 97