Fun and accessible problems for younger students or beginners. Posted every Monday, these weekly brain teasers kickstart your week with a mental warm-up.
The digits 1, 2, 3, and 4 can be arranged to make 24 different four-digit numbers. The least created number using these digits is 1234. If these numbers are listed from least to greatest, 1234 is the first number and the second number is 1243, what is the second to last number?
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