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anonymous
 one year ago
PLZ help !!! can someone plz help me solve this question.
To register for online banking services at a local credit union, you need to select a fourdigit
personal identification number, or pin code. The digits cannot be repeated. How many ways
are there to arrange four digits out of the numerals 0 through 9 to create a code?
anonymous
 one year ago
PLZ help !!! can someone plz help me solve this question. To register for online banking services at a local credit union, you need to select a fourdigit personal identification number, or pin code. The digits cannot be repeated. How many ways are there to arrange four digits out of the numerals 0 through 9 to create a code?

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0[10 * 9 * 8 * 7] = 5040

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0(x)(x1)(x3) or 10*9*8*7=5040

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0is this how we do it ? nᴾr = n! / (n  r)! 10ᴾ4 = 10! / (10  4)! 10ᴾ4 = (10*9*8*7*6*5*4*3*2*1) / ( 6*5*4*3*2*1) 10ᴾ4 = 3628800 / 720 10ᴾ4 = 5040

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0is 5040 the pin code ? but its say no digit can be repeated right ? but in the answer 0 i repeated

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0lets say x is the chosen digit.....you have 10 choices for the first one, if you take that out because it is unusable, you have 9 choices for the second, 8 for the third, etc....so the total number of combinations would be 5040

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0In the answer the digits can repeat

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Because it's the number that many time 10 9 8 7 can be arranged

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Many different times*

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0E.g. Code can 98710 or 87910 .... 5040 different codes

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0oh ok thank you so much i understand now. is the process i have written above the correct way to right it ?
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