Number pairs - help please

[mathsstudent]

The numbers in the brackets follow the same rule. What are the missing numbers?

[27,9] ,[8,4] ,[?,16] ,[1,1]

[32,5],[43,7],[54,?],[62,8]

[17,50],[8,5],[10,15],[16,?]

[11,13],[18,6],[?,1],[5,19]

Can someone help me to find the missing numbers please

 

[Dr.Peterson]

The numbers in the brackets follow the same rule. What are the missing numbers?

[27,9] ,[8,4] ,[?,16] ,[1,1]

[32,5],[43,7],[54,?],[62,8]

[17,50],[8,5],[10,15],[16,?]

[11,13],[18,6],[?,1],[5,19]

Can someone help me to find the missing numbers please

These are puzzles; each may have a very different "pattern", so you have to look for something in each that might be significant. I can't help you with that until I see your own thinking, which will show what sort of help you need. And that's what we ask of you:

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For the first, what I immediately see are perfect squares and cubes. For the second, I saw a couple wrong ideas before seeing something that works, involving digits. I haven't bothered to work out the others yet.