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## 'One to Eight' printed from http://nrich.maths.org/

Here are some 'funny factorisations'. Complete the following
expressions so that each one gives a four digit number as the
product of two two digit numbers and uses the digits $2$ to $9$
once and only once.

** $\times$ ** $= 4876$

** $\times$ ** $= 5394$

Now do the same with the digits $1$ to $8$ to complete the
following expressions.

** $\times$ ** $= 1368$

$5$* $\times$ $6$* $=$ ****

$52$ $\times$ ** $=$ ****

Is there more than one solution?