A fresh card pile is taken out of a box (the pile has 54 cards including 2 jokers). One joker is taken out and then the cards are shuffled for a good amount of times. After shuffling, two piles are made by dividing that one pile.
What is the possibility that one of the piles will have a card sequence from A to K in order?
How many triangles can you count in the figure given?
John replied, when asked how old he was. In 2 years he will be twice as old as he was five years ago.' How old is he ?
