Alock has 5 buttons. the lock is opened by pushing two buttons simultaneously and then by pushing one button alone. how many combinations are possible?

There are 5 choose 2 options for pushing two buttons simultaneously and then 5 options for pushing one button alone

5 choose 2 is 5!/(3!*2!) = 10

10*5 = 50 different combinations

idk

step-by-step explanation:

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