Headahh9986
30.06.2021 •
Physics
When testing for current in a cable with nine color-coded wires, the author used a meter to test four wires at a time. How many different tests are required for every possible pairing of four wires?
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Ответ:
Would think that this is 9C3 as order should not matter
this is 9!/(6!)(3!) which is 9 x 8 x 7/ 3 x 2
which is 84
Explanation:
!
Ответ: