I need help with this confusing question please help?

Question

Use the numbers 1,2,4,5 in any order to write expressions to equal each integer from 1 to 20

Answer 1

You have to write 20 equations using only the numbers 1,2,4 and 5.

There must be an equation written for each integer (natural number ie: no decimals or fractions) from one to twenty.

ie: the first equation must equal 1, the next one will equal 2, then you have to do one that equals 3, and keep going until the last one equals 20.

Hope this helps.