Hello.

Suppose one is given a life table like the ones I've attached below. I'm confused because the last column states age x+2. So if for example I want to find l(50), do I look at l(48) ? I'm struggling to interpret the x+2 part. Say if I'm looking at l(50) from the table, is that actually l(48)? Or rather should I look at it as; if I want to find l(50) I should look in the table at l(52)?