A REVIEW OF BRAIN TEASERS

c) It’s as light-weight for a feather, though the strongest person can’t keep it for much more than 5 minutes. What on earth is it?e) You planted sunflower seeds in your again yard. On a daily basis, the volume of bouquets doubles. If it will take fifty two days for the bouquets to fill the backyard garden, how many days wouldn't it choose for