document.write( "Question 1002205: given 4 distinct objects, if you take 2 at the time, the possible number of combinations is equal 2 \n" ); document.write( "
Algebra.Com's Answer #619183 by fractalier(6550)\"\" \"About 
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Four taken two at a time makes for six combinations...
\n" ); document.write( "4! / 2!(2!) = 4x3 / 2x1 = 6
\n" ); document.write( "Choose two from abcd...
\n" ); document.write( "ab, ac, ad, bc, bd, and cd.
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