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

Allie on March 3 at 05:35AM

Sequencing Games

On the Sequencing games video (4.45 sec in) why wasn't A crossed off as an option for the 6th spot as well? A and B were marked off only for the 7th spot?

1 Reply

Ravi on March 11 at 03:55PM

@AllieC,

Happy to help.

The rule pertaining to A and B states that A and B must go before C.
The reason that they are crossed off for the 7th spot is since they
have to go before C, there is no possible way that they can go last.

However, either A or B could go 6th. For example, A could go 5th, B
could go 6th, and C could go 7th, and this would not be in violation
of any of the rules. Likewise, B could go 5th, A could go 6th, and C
could go 7th, and this also wouldn't be in violation of any of the
rules.

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