This is the game of "Noughts and Crosses" or "Tic Tac Toe".
In how many different ways can the first "X" and "O" be placed on the grid?
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In how many different ways can the first three moves be placed on the grid? First four moves etc.?
How many different games are there?
How many different arrangements of noughts and crosses are possible on a full grid?
Instead of using paper and pencil, play noughts and crosses with people! You can find instructions on the People Maths page.
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Teacher, do your students have
access to computers?
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Ultimate Noughts and Crosses is the new game that I get really excited about playing. It's magnificent, have a look!