Tag Archives: divisibility rules

Problem of the Week 6 – Divisibility by 6

Problem The number 25a where a is a digit is divisible by 6. What is the largest possible value of a? Solution A number is divisible by 6 if it is both divisible by 2 and divisible by 3. First, a number if … Continue reading

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Problem of the Week 3 – Largest Possible Value

Problem The number where and are digits is divisible by . What is the largest possible value of ? Solution A number is divisible by 6 if it is divisible by 2 and it is divisible by 3. For a … Continue reading

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