# SOLUTION: please help me with the following question with a good explanation on how to work it out for me and my son, Thanks in advance! evaluate the expression: (1000!-999!)/998!

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 Question 154962: please help me with the following question with a good explanation on how to work it out for me and my son, Thanks in advance! evaluate the expression: (1000!-999!)/998!Answer by stanbon(57962)   (Show Source): You can put this solution on YOUR website!evaluate the expression: (1000!-999!)/998! ------------------------------------ Note: 1000! = 1000*999! and 999! = 999*998! --------------------------- Rewrite the problem: (1000*999! - 999!) / 998! ---------------------------- = (999!)(1000 - 1)/998! = (999*998!)(999)/998! Cancel the 998! common to the numerator the denominator. = 999*999 = 998001 ====================== Cheers, Stan H.