2•2 4•4 6:2

It looks like you're presenting a series of numbers and operations, but it's not entirely clear what you're asking. If you're looking for calculations based on those numbers, here they are broken down:

• \(2 \cdot 2 = 4\)
• \(4 \cdot 4 = 16\)
• \(6 \div 2 = 3\)

If you have a specific question or topic related to these numbers, feel free to provide more details!