What should come in place of the question mark (?) in the given series?
24, 34, 54, 94, 174, ?

Given: 24, 34, 54, 94, 174, ?

Logic: The pattern in difference is 10, 20, 40, 80→ Doubled each time.

34 - 24 = 10

54 - 34 = 20

94 - 54 = 40

174 - 94 = 80

Next difference should be:

So correct difference is:
10 → 20 → 40 → 80 → 160

Therefore:
174 + 160 = 334

Thus, the correct option is (c) 334.