Marbles Marbles

There is a bag which has 21 blue marbles and 23 red marbles. You also have 22 red marbles outside the bag.

Randomly remove two marbles from the bag.
* If they are of different colors, put the blue one back in the bag.
* If they are the same color, take them out and put a red marble back in the bag.

Repeat this until only one marble remains in the bag.

What is the color of the sole marble left in the bag ?

First <1213141516171819>Last

Comments are Appreciated

Comments will be published only after the approval of the moderators