Question

Ifonlythedigits0-4maybeused,findthenumberofpossibilitiesforeach:a) 3-digitnumbers.b) Odd3-digitnumbers.c) 3-digitnumberswithoutrepeateddigits.

Answer 1

a) 004 044 000

040 404 444 8 numbers

400 440

b) None

c) None, because we only have 2 digits, I need to repeat at least 1 number.