How to know if the MacBook Pro is having dual core or Quad core? What do dual or quad core mean and how do I know which one I have in the Mac.

In the hardware info I see the processor name "6-Core Intel Core i7". But I expected Quad core means only 4?
What do dual or quad core mean


Dual meaning 2 and quad meaning 4. This indicates the number of physical cores present in the processor.


  how do I know which one I have in the Mac


Go to Apple Menu (top right corner on your Mac) → About This Mac and click on the System Report... button. In the window that is presented, click on the Hardware item at the top in the left column. On the right, you can see the processor type and the number of cores present in it.