SOLUTION: Each ship in a fleet is assigned a three-digit number that does not begin with a 1 or a 0 and does not contain a 6 or a 9. How many different numbers may be assigned under these co

Question 1099186: Each ship in a fleet is assigned a three-digit number that does not begin with a 1 or a 0 and does not contain a 6 or a 9. How many different numbers may be assigned under these conditions?
A) 216
B) 252
C) 336
D) 384
E) 512
Answer by ikleyn(53765) (Show Source): You can put this solution on YOUR website!
.

There are only  10-4 = 6  allowed digits at the first, most left position.

There are       10-2 = 8  allowed digits at the second position.

There are       10-2 = 8  allowed digits at the third position.


In all, there are 6*8*8 = 384 possible numbers.

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