Jason is a glove fanatic, he just loves gloves and has ten pairs of them - five pairs are in wollen and five are in leather. He likes to keep them in his drawer arranged in an ordered fashion. However, one day the light goes out due to a power cut and his house is in complete darkness. He feels a need to wear his beloved gloves as its very cold outside. How many single gloves should he take out from his drawer so that he can be entirely sure of getting a matching pair (two wollens or two leathers).
Come back tomorrow for the correct answer to this teaser.
Answer for yesterday's Brain Teaser
In a swimming race, you find that a swimmer can swim downstream (with the current) in a river, 2 miles in 40 minutes, & upstream (against the current) 2 miles in 60 minutes. How long would it take the swimmer to swim a mile in still water?
Swimmer is able to swim downstream at 3 miles an hour and upstream at 2 miles an hour. There is a difference of 1 mile an hour, which is the river helping the swimmer in one direction and slowing him in the other direction.
Average of the two speeds gives the rate at which the swimmer can swim in still water, which is 2.5 miles an hour.
Thus, swimmer can swim a mile in still water in 24 minutes.