In how many distinct ways can I arrange my five keys on a keychain, if I want to put my house key next to my car key? Two arrangements are not considered different if the keys are in the same order (or can be made to be in the same order without taking the keys off the chain--that is, by reflection or rotation).

lolzforlife  Jun 20, 2018

You have two places to start

House - car

car - House       then the next 3 spaces have 6 possibilities


2 x 6 = 12 ways.        My guess.

Guest Jun 21, 2018

My guess is 24

Confusedperson  Jun 21, 2018

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