Mathematics, 27.07.2021 01:40 bearbri4520
(a) How many different three-letter initials can people have: , (b) How many different three-letter initials with none of the letters repeated can people have: , (c) How many different three-letter initials with letters repeated begin with an X: , (d) How many different three-letter initials begin with a F and end in a D: .
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(a) How many different three-letter initials can people have: , (b) How many different three-letter...
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