2 ladies and 2 girls need to cross a river in a boat big enough for 1 LADY or 2 girls. How do they do it?

What word begins and ends with an E, but has only one letter?

Jessica is telling her friends this story and asks them to guess if it’s the truth or a lie: “There was a man sitting in a house at night that had no lights on at all. There was no lamp, no candle, and no other source of light. Yet, he sat in the house and read his book happily.” Her friends say she’s lying, but Jessica corrects them and says she’s telling the truth. Jessica’s story is true—but how?

You stand in front of two doors. A guard stands next to each door. You know the following things: one path leads to paradise, the other leads to death. You cannot distinguish between the two doors. You also know that one of the two guards always tells the truth and the other always lies. You have permission to ask one guard one question to discover which door leads to paradise. What one question would you ask to guarantee you enter the door to paradise?

Which wheel of car does not rotate when you turn your car right?

I am a prime number.
The double of myself is equal to the square of me.

which number am I?

A man dies of old age on his 25 birthday. How is this possible?

The day after tomorrow will be three days before Tuesday. Can you find out what is today?

How can you take 2 from 5 and leave 4?

The peacock is a bird that does not lay eggs. How do they get baby peacocks?