SOLUTION: problem of maths is given to three students whose chances of solving it are 1/2,1/3,1/4.whta is the probability that the problem is solved?

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Question 881806: problem of maths is given to three students whose chances of solving it are 1/2,1/3,1/4.whta is the probability that the problem is solved?
Answer by Theo(13342) About Me  (Show Source):
You can put this solution on YOUR website!
the formula is:
p(a or b or c) = p(a) + p(b) + p(c) - p(ab) - p(ac) - p(bc) + p(abc).

p(ab) = p(a) * p(b).
p(ac) = p(a) * p(c).
p(bc) = p(b) * p(c).
p(abc) = p(a) * p(b) * p(c).

use that formula and you will find that the problem will be solved 3/4 of the time.