A man has 53 socks in his drawer: 21 identical blue, 15 identical black and 17 identical red. The lights are fused and he is completely in the dark. How many socks must he take out to be 100 percent certain he has a pair of black socks?

Riddle Answer# Interview Riddles

## 20 Percent off Sale Price

If the price off a dress was cut by 20% for a sale, by what percentage off the sale price must it be increased by to resell it at the original price?

Riddle Answer## Clock Hands Overlap

Can you determine how many times do the minute and hour hands of a clock overlap in a day?

Riddle Answer## Stack of Pennies

If you had a stack of pennies as tall as the Empire State Building, could you fit them all in one room?

Riddle Answer## Tower of Hanoi – 6 Disks

Below are six discs stacked on a peg. The object is to reassemble the discs, one by one, in the same order on another peg, using the smallest number of moves. No larger disc can be placed on a smaller disc. How many moves will it take?

Riddle Answer