At a party, everyone shook hands with everybody else. There were 66 handshakes. How many people were at the party?
In a drawer you have black socks and white socks. They are not stored away in pairs. Without looking, how many times will you have to reach into the drawer to come out with a matching pair?
At a party, everyone shook hands with everybody else. There were 66 handshakes. How many people were at the party?
In a drawer you have black socks and white socks. They are not stored away in pairs. Without looking, how many times will you have to reach into the drawer to come out with a matching pair?
At a party, everyone shook hands with everybody else. There were 66 handshakes. How many people were at the party?
In a drawer you have black socks and white socks. They are not stored away in pairs. Without looking, how many times will you have to reach into the drawer to come out with a matching pair?
