Question 24
Four 2-digit numbers are made up from the digits 1, 2, 3, …, 8 with no repetition. The following are the hints about these numbers:
- In the smallest number, the ones digit is twice the tens digit.
- In the largest number, the sum of the ones and tens digits is 9.
- In the second largest number, the tens digit is 5 more than the ones digit.
- There is only 1 odd number among these 4 numbers.
Find the second smallest number.
Use each digit from 1 through 8 exactly once across the four numbers; order the numbers by numerical value.
Input: enter a whole number using digits only, without units. Leading zeroes from the paper answer grid may be omitted.
- In the smallest number, the ones digit is twice the tens digit.
- In the largest number, the sum of the ones and tens digits is 9.
- In the second largest number, the tens digit is 5 more than the ones digit.
- There is only 1 odd number among these 4 numbers.
Find the second smallest number.
Use each digit from 1 through 8 exactly once across the four numbers; order the numbers by numerical value.
Input: enter a whole number using digits only, without units. Leading zeroes from the paper answer grid may be omitted.