Posted by **celina** on Tuesday, June 26, 2007 at 9:17am.

the probabilities that 3 friends A,B andC pass a driving test are1/3,1/4,2/5 respectively.All 3 take the test find the probability that(a)aa 3 failed the test (b) only B passes the test(c) only 2 of them pass the test (d)at least 1 passes the test...

I will do one. Assuming the events are independent...

Prob (all fail)=Prob(Afails)*prob(bfails)*prob(cfails)

= 2/3 * 3/4 * 3/5

## Answer This Question

## Related Questions

- Elementary Mathematics - The probabilities that May, Lily and Mary will pass a ...
- Discrete Math - 13 Define F as failed in the diagnostic test that P(F)=0.08 and ...
- Math (prob) - The probability of an outstanding student pass a biology test is ...
- math - John is writing a 60 question test for his driving test, to pass he must ...
- Probability - The probability that a student passes a physics test is 2/3 and ...
- biochemistry - for each of these qualitative test,barfoed test,benedict test,...
- Math (prob) - The probability of an outstanding student pass a biology test is ...
- Math (prob) - The probability of an outstanding student pass a biology test is ...
- phi 103 - mrs orlof teaches 2 history classes one in the afternoon and one in ...
- Art - Could you please check these few examples? Thank you very much, ...

More Related Questions