2001 AMC 8 Problems/Problem 25
Problem
There are 24 four-digit whole numbers that use each of the four digits 2, 4, 5 and 7 exactly once. Only one of these four-digit numbers is a multiple of another one. Which of the following is it?
Solution 1
There are only 5 options for the problem so we can just try them. It is easy since that we only need try to use , to divide them. Even will leads to a solution start with which we don't need.
, . . , . . The answer is . You can obtain the answer in only 6 calculations. ~ M4ST3R0FM4TH
See Also
2001 AMC 8 (Problems • Answer Key • Resources) | ||
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