Odds or Evens
Imagine bob is running a race and has 2 flags. One is red, one is blue. At half of the race, he will hold up a red flag. At half of half of the race, he will hold up a blue flag. At half of half of half of the race, he will hold up a red flag and so on. At the end of the race, will he hold up the red or the blue flag?
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1 solution
Technically, Bob will never reach the end of the race - you just keep on halving and halving and halving...
To put it into Math's perspective, just imagine 1 ÷ 2 = x , then x ÷ 2 = y , then y ÷ 2 = n ...and so on --- you will never get to 0 ; or the end of the race.