Ask Question
7 January, 10:02

In a box someone has accidently mixed 5V, 10V and 15V relays. The box contains 100 relays: 60 are 5V, 25 are 10V, and 15 are 15V. Three relays will be drawn out one at a time checked and then put back. Match the probabilities.

+1
Answers (1)
  1. 7 January, 13:48
    0
    Total Number of Relays = 100

    Number of 5V relays = 60

    Number of 10V relays = 25

    Number of 15V relays = 15

    Probabilities:

    All the drawn are 5V relays = 60 / 100 = 0.6

    All the drawn are 10V relays = 25 / 100 = 0.25

    All the drawn are 15V relays = 15 / 100 = 0.15

    At least one is 10V relays = (60 / 100) x (59/99) + (25/100) x (25/99) + (15/100) (15/99) = 0.35758 + 0.06313 + 0.02273 = 0.44344 = 0.44
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “In a box someone has accidently mixed 5V, 10V and 15V relays. The box contains 100 relays: 60 are 5V, 25 are 10V, and 15 are 15V. Three ...” in 📙 Business if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers