Question

If the following number patterns continue, which pattern will need the fewest additional numbers to reach or exceed $200$?

• A. $9,18,27,36,45,...$
• B. $10,20,30,40,50,....$
• C. $5,10,20,40,80,....$
• D. $20,40,60,80,100,...$

Answer 1

Answer: (C)

$5,10,20,40,80,....$

In option C series second number is double of first number so
$5,10,20,40,80,160,\mathrm{320................}$
So in option C pattern will need the fewest additional numbers to reach or exceed 200.