SOLUTION: 1. How many 6-digit numbers containing 3,2 & 1 (repitition allowed)? 2. How many 6-digit numbers containing two 0, two 1 & two 2 can be constructed(number must not begin with 0)

Question 481932: 1. How many 6-digit numbers containing 3,2 & 1 (repitition allowed)?
2. How many 6-digit numbers containing two 0, two 1 & two 2 can be constructed(number must not begin with 0)
3. How many 4-digit numbers in terbary numeral system containing two 0, can be constructed? (number must not start with zero.)
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
(1)
There are 3 choices for each digit

(2)
There are 2 choices for the 1st digit

(3)
There are 3 choices for the 1st digit ( 1,2,or 3 )

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