Psychologists observing a shopping mall parking lot found that, on average, drivers spent 39 seconds leaving a parkin...

Ravi on August 1 at 05:58PM

@Ana-Ponce,

If O joined the firm before M, then this means that H, N, K, and J
also have to go before M since H and N are before O and K and J are
before M. This means the earliest M could have joined was 1966.

It's important to remember that both O and M each have two people
before them, so if O is before M, then there are four additional
people in addition to O that must come before M.

Does this make sense? Let us know if you have any other questions!