What will be the best approach to finding all the prime numbers less than 75 that leave an odd reminder when we divide them with 5?

A bus driver was heading down a street in Mexico. He went right past a stop sign without stopping, he turned left where there was a "no left turn" sign, and he went the wrong way on a one-way street. Then he went on the left side of the road past a cop car. Still - he didn't break any traffic laws. Why not?

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

What number comes next in the series?

5 15 5 18 5 24 14 20 _

You need to arrange three 7 and mathematical symbols to form number 1?

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

In two decks of cards, what is the least amount of cards you must take to be *guaranteed* at least one four-of-a-kind?

A clock loses 10 minutes each hour. If the clock is set correctly at noon, what time is it when it reads 3 PM?

What's the next in the series?

H, Be, F, S, Mn, Kr, In, Gd, Tl, ?

A girl is twice as old as her brother and half as old as her father. In 50 years, her brother will be half as old as his father. How old is the daughter now?