Also, can he find the pairs of smallest possible numbers in each case?

He said Australians should attend next weekend's ceremonies in the "largest possible numbers".

Of course these numbers have no significance, for they are never actual or even possible numbers.

Here are answers for the ten possible numbers:-

Seven days times two possible numbers of days is only fourteen ways to have the dates and days matched up.

Now, in order to get the smallest product, it is necessary to select as multipliers the two smallest possible numbers.

As well might we require an instinctive notion of all possible numbers, to bear out our instinctive sense of proportion.