Question 24
How many whole numbers smaller than 300 can be formed using the digits 2, 5, 1 or 3, if each digit is used at most once in any number? Use at least one of the given digits.
Answer format: one whole number, without units. Leading zeros are optional; the printed answer sheet uses four digits.
Answer format: one whole number, without units. Leading zeros are optional; the printed answer sheet uses four digits.