document.write( "Question 303335: The letters of the alphabet are writtten on slips of paper and placed in a hat. three letters are selected at random.
\n" ); document.write( "A. How many different combinations of three letters are possible?
\n" ); document.write( "B. How many combinations consist only of the letters A,C,H,I,K or Y?
\n" ); document.write( "C. What is the probability that the letters selected consist only of the letters A,C,H,I,K or Y? \n" ); document.write( "

Algebra.Com's Answer #217445 by dabanfield(803) $\"\"$ $\"About$

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The letters of the alphabet are writtten on slips of paper and placed in a hat. three letters are selected at random.
\n" ); document.write( "A. How many different combinations of three letters are possible?
\n" ); document.write( "B. How many combinations consist only of the letters A,C,H,I,K or Y?
\n" ); document.write( "C. What is the probability that the letters selected consist only of the letters A,C,H,I,K or Y?\r
\n" ); document.write( "\n" ); document.write( "A.) The number of ways to select three letters from 26 is
\n" ); document.write( "C(26,3) = 26!/((26-3)!*3!) = 26!/(23!*3!) = (26*25*24)/(3*2*1) = ?\r
\n" ); document.write( "\n" ); document.write( "B.) The number of ways to select three letters from the group of 6 letters is
\n" ); document.write( "C(6,3) = 6!/((6-3)!*3!) = 6!/(3!*3!) = (6*5*4)/(3*2*1) = ?\r
\n" ); document.write( "\n" ); document.write( "C.) (answer from A)/(answer from B) \n" ); document.write( "

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