SOLUTION: from the numbers 1,2,3,4,5,6,7,8 and 9 Four different numbers are selected to form a four digit number How many four-digit even numbers can be formed?

Algebra ->  Permutations -> SOLUTION: from the numbers 1,2,3,4,5,6,7,8 and 9 Four different numbers are selected to form a four digit number How many four-digit even numbers can be formed?      Log On


   

Question 1173334: from the numbers 1,2,3,4,5,6,7,8 and 9 Four different numbers are selected to form a four digit number
How many four-digit even numbers can be formed?
Answer by ikleyn(52781) About Me  (Show Source):
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from the numbers 1,2,3,4,5,6,7,8 and 9 Four different numbers are selected to form a four digit number
How many four-digit even numbers can be formed?
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From the context, I assume that repeating of digits is NOT allowed.


Any of 4 even digits as an "ones" digit.


Any of 8 remaining digits as a "tens" digit.


Any of 7 remaining digits as a "hundred" digit.


Any of 6 remaining digits as a "thousand" digit.


In all, there are  4*8*7*6 = 1344 possible combinations.      ANSWER

Solved.