<PRE><B>Question 879841</B>
51 P 2 is the same as 51*50


You start at 51. Then you count down until you have 2 numbers to multiply (the 2 is from 51P2). Another example would be 51P4 = 51*50*49*48. Notice how I started at 51 and counted down to 48 to have 4 terms multiplied out.


You could use the formula nPr = (n!)/(n-r)!, but I like the first method better. Either way is up to you.


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So, 51 P 2 = 51*50 = 2550</PRE>