I am an odd number. Take away one letter and I become even. What number am I?

Your shirt has two holes in it. How many holes are there?

You have 14 brown socks, 14 blue socks and 14 black socks in your sock drawer. How many socks must you remove (without looking to be sure) to have a matched pair?

You go to the doctor because you're ill and he prescribes you with 3 pills and tells you to take them every half hour. How long do the pills last you?

How can you make the following equation true by drawing only one straight line: 5+5+5=550? Can you figure it out?