Posted by B.B. on Monday, August 3, 2009 at 1:04pm.
Did I do this problem right?
How many three symbol codes (letternumbernumber) can be made from the letters S,P,Y and two digits from the set {0,1,2,...,9} without repetition?
Answer: 3*10*9=270.

Math  bobpursley, Monday, August 3, 2009 at 1:28pm
correct
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