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## 'All the Digits' printed from http://nrich.maths.org/

Use counters or scraps of paper with the digits $0 - 9$ written on them.

Make a list of $3$ consecutive numbers $0 - 9$ remembering that $3$ has already been accounted for.

What could the ones digit of the product be if the multiplication is by $3$?

Which consecutive numbers could be in the four-digit number?

Which other digit could appear in the four-digit number?