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scorer · 2005 January 23rd, 04:40 PM

2^6 - 1 is the shortest way, though understanding the mechanics is important.

Total Combinations = nCr.
Where n = 6.
r = 1..6. (no zero because, atleast one question has to be solved)
so 6C1+6C2+...+6C6 = 63.

2005 January 23rd, 04:40 PM	#5 (permalink)
scorer Validus dux ducis Join Date: Oct 2004 Posts: 139	Re: Comb. 2^6 - 1 is the shortest way, though understanding the mechanics is important. Total Combinations = nCr. Where n = 6. r = 1..6. (no zero because, atleast one question has to be solved) so 6C1+6C2+...+6C6 = 63.