I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?

2, 3, 5, 9, 17, _ What is the next number in the sequence?

A girl was sitting in her hotel room when she heard a knock on the door. She opened the door and found that a man was standing outside. The man said, "Oh! I am really sorry, I thought this was my room." He then walked through the corridor to the elevator. The girl did not know the man. She closed her door and called security asking them to apprehend the man. What made her suspicious of that man? He might have been genuinely mistaken.

Can you count the number of quadrilaterals in the picture below?

Move four matchsticks to the below square to form three squares?

The Puzzle: Here is a famous prize problem that Sam Loyd issued in 1882, offering $1000 as a prize for the best answer showing how to arrange the seven figures and the eight 'dots' .4.5.6.7.8.9.0. which would add up to 82

Can you write down eight eights so that they add up to one thousand?

A woman who works in a sweet shop has a measurement of 32-26-36, is 5"4" tall, and wears size "6" shoes. What do you think she weighs?

Can you find out the remainder when 3^300 is divided by 5?