Mathematics
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A bank assigns random 4-digit numbers for ATM access codes. In each code, no digit
A bank assigns random 4-digit numbers for ATM access codes. In each code, no digit is repeated.
How many arrangements of 4 digits can be chosen from 10 digits, if order is not important?
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How many arrangements of 4 digits can be chosen from 10 digits, if order is not important?
alexapacheco012
4,9(47 marks)
1.(c) 18.8 units2.(a) 3 units3.(c) 9.4 units4.(a) breaking the circle into more sectors5.(c) 28.3 units
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