P(a) = 0.20 p(b) = 0.25 p(a and b= 0.10 what is p(b|a)?

Which approach to the theory-and-research cycle does the following sequence reflect: (1) specific observations suggest generalizations, (2) generalizations produce a tentative theory, (3) the theory is tested through the formation of hypotheses, and (4) hypotheses may provide suggestions for additional observations?

One integer is 8 times another. if the product is 72, then find the integers

What is the the greatest common factor ?