I am under you when I am whole.
I shift above you if you remove the first letter.
I come all around you if you remove the second as well.

Can you tell me who I am?

How high do you have to count before you use the letter “a” in the English spelling of the whole number?

Four people need to cross a rickety bridge at night. Unfortunately, they have only one torch and the bridge is too dangerous to cross without one. The bridge is only strong enough to support two people at a time. Not all people take the same time to cross the bridge. Times for each person: 1 min, 2 mins, 7 mins and 10 mins. What is the shortest time needed for all four of them to cross the bridge?

We know that the number 7 is the prime followed by a cube. Which next number is also a prime followed by a cube?

What does this say?

XLR8

I have lakes with no water, mountains with no stone and cities with no buildings. What am I?

What is the fastest way to double your money?

I taste better than I can smell. Who am I?

What is black when you buy it, red when you use it, and gray when you throw it away?

A girl says this to her best friend: “I was born in 1955, and I celebrated my 17th birthday last weekend.” Her best friend thinks she’s lying, but she’s actually correct. How is that possible?