Posted by Fakaapo. Suetusi on .
Probability that Jackson is in the office is 0.82 and probability that Alice is in the office is 0.5. The probability that Jackson is in the office given that Alice is in the office is 0.76.Find the probability that at any particular time during office hours.
1)Both Jackson and Alice are in the office.
2)Alice is the office given that Jackson is in the office
3)At least one of them is in the office.
Thank you for your helping.

Please can help me solving my problems(Probality) 
MathMate,
Conditional probability
P(J given A), or
P(JA)=P(J∩A)/P(A)
Can you take it from here?