Z6 – I – 6 MO 2019
A mother was studying multi-digit numbers in which odd and even digits alternate regularly. She called those starting with an odd digit 'comical' and those starting with an even digit 'cheerful'. (For example, the number 32387 is comical, and the number 4529 is cheerful.)
Among three-digit numbers, determine whether there are more comical or more cheerful numbers, and by how much.
Among three-digit numbers, determine whether there are more comical or more cheerful numbers, and by how much.
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