How many numbers can be made from the following digits if each digit is used one time? 3596
by 
Anonymous
ANSWERS: 2
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If each digit is used one time: You have 4 choices for the first position. For each of those 4 choices there are 3 choices for th second position.Now there are 12 possibiltiies for the the first two digits. Each of those has 2 choices for the third place. Now there are 24 ways to make the first three digits, and ther is no choice for the fopurth, because there is only 1 digit left. 4x3x2x1=23..4x3x2x1 can be written 4! which is called 4 factorial
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4 when 1 is used 12 when 2 are used 24 when 3 are used 24 when 4 are used =64 different ways.
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