Q:Three friends are playing a game in which each person simultaneously displays one of three hand signs, a clenched fist, an open palm, or two extended fingers. How many different combinatiions of the signs are possible? A: 10 (why?)

Q:Three friends are playing a game in which each person simultaneously displays one of three hand signs, a clenched fist, an open palm, or two extended fingers. How many different combinatiions of the signs are possible? A: 10 (why?)