APTYIDMen's Ankle Athletic Cushioned Breathable Running Socks (6 Pack)

I've bought the same size sock in the stores and they worked fine. Unfortunately these won't fit a man size 13 shoe foot?

Are these socks marked with L and R on the soles?

would the 9 to 12 size sock fit a size 10 foot?

Six socks, as in 3 pairs?