SOLUTION: Please help me solve this SAT practice question?
Berkeley Airlines tickets have 4-digit codes. How many codes are possible if the digits are any 4 digits? What if the digits are a
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Question 559793: Please help me solve this SAT practice question?
Berkeley Airlines tickets have 4-digit codes. How many codes are possible if the digits are any 4 digits? What if the digits are all multiples of three?
I tried to go through and list all the possible codes, but that was taking forever. So I was just wondering if there are any more efficient ways of solving these problems.
Answer by scott8148(6628) (Show Source): You can put this solution on YOUR website!
from 0000 to 9999 ; 10000 codes
starting with 0000 ; every third number is a multiple of 3 ___ 3334 codes
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