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Yakvenalex [24]

3 years ago

9

Five-digit locker combinations are assigned using the digits 1–9. In how many ways can the combinations be formed if no digit ca

n be repeated

1 answer:

Orlov [11]3 years ago

4 0

Answer:

15, 120

Step-by-step explanation:

9P4

.............................................................................................

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Four resistors are connected in series such that their total resistance is 50ohm . If the resistance of resistors is 5 ohm , 10o

Katyanochek1 [597]

<h2>Answer:</h2>

$\boxed{R_{4}=20\Omega}$

<h2>Step-by-step explanation:</h2>

If resistors are in series, so the current $I$ is the same in all of them. In this problem we have four resistors. So, we can get a relationship between the Equivalent resistance of series combination and the four resistors as follows:

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