A box contains six 10-ohm resistors and ten 30-ohm resistors. The resistors are all unmarked and are of the same physical size. At the start, two resistors are selected from the box. Find the probability that the first is a 10-ohm resistor and the second is a 30-ohm resistor.
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Probability that the first is a 10 ohm resistor and the second is a 30 ohm resistor: There are a total of 16 resistors in the box (6 + 10). The probability of picking a 10 ohm resistor first is 6/16. After picking the first resistor, there are 15 resistors left in Show more…
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(1) A box contains six 10 ohm resistors and ten 30 ohm resistors. The resistors are all unmarked and are of the same physical size. One resistor is picked at random from the box; find the probability that it is 10 ohm resistor. (2) A box contains six 10 ohm resistors and ten 30 ohm resistors. The resistors are all unmarked and are of the same physical size. One resistor is picked at random from the box; find the probability that it is 30 ohm resistor. (3) A box contains six 10 ohm resistors and ten 30 ohm resistors. The resistors are all unmarked and are of the same physical size. At the start, two resistors are selected from the box. Find the probability that both are 10 ohm resistors.
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