P(A)=0.40
P(B)= 0.60
P(A and B)= 0.15
What is P( A│ B)?

Anthony is making a collage for his art class my picking shapes randomly. he has five squares, two triangles, two ovals, and four circles. find p( circle is chosen first)

If 1/√5+1/√5+1=p+q√r , find the values of p, q and r

Parabolas y=−2x^2 and y=2x^2 +k intersect at points a and b that are in the third and the fourth quadrants respectively. find k if length of the segment ab is 5.