An eight year old kid challenged his classmates that he can make the number one disappear by adding something to it.
How can he do that?
Pawan has something on the tip of his nose, but he's not sure what it is. He can't take it off because he doesn't have arms. He can't ask his parents because they are blind and deaf. There is no one near his house for twenty miles. He lives on a farm. He doesn't own a car because he rarely needs to go into town to get anything, so he can't ask anyone.
What should he do ?
How many ways can you find to make the number 10, by adding or subtracting prime numbers?
The same numbers but in a different order count as the same answer. (Prime numbers are only divisible by themselves and 1 so they are 2, 3, 5, 7, 11, 13, ...)
One day, Joe and his friends were playing around. Mark hit something with a bat and it broke. Joe's dad came in the room that very moment, but he wasn't mad. In fact, he was smiling. What did Mark hit?