If $5$5 is put into this function machine what is the output?

The output is $\editable{}$

Easy

Less than a minute

If $6$6 is put into this function machine what is the output?

If $7$7 is the output of this function machine then what is the input?

If $3$3 is the output of this function machine then what is the input?

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generalises properties of odd and even numbers, generates number patterns, and completes simple number sentences by calculating missing values