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# 80 keybord buttons. how many shortcuts possible?

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Joined: 09 Jun 2003
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80 keybord buttons. how many shortcuts possible? [#permalink]  24 Sep 2003, 04:45
guys,

there are 80 keybord buttons i have: 77 'working' buttons and 3 'assignable' buttons - ctrl, shift and alt. how many shortcuts i can arrange with this keybord?

shortcuts mean you use assignable buttons in either combination: either single ctrl with other 77 buttons or ctrl + alt with those 77 etc.

ps. i've got 82,160...
Intern
Joined: 21 Jul 2003
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Here is what I get

With one assignable button = 3 * 77 = 231
With 2 assignable buttons = 3C2 *77 = 231
With 3 assignable buttons = 77

Total number of combinations = 539.
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Joined: 30 Oct 2003
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Assuming ALT + 77 keys also makes valid combination
Also CTRL + ALT + anykey is same as ALT+CTRL+any key
then we have

(3C1 + 3C2 + 3C3 ) * 77 = 539 combinations
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