Find the greatest common factor of 15a^3 and 25b^4

What is the smallest integer n such that n\sqrt{2} is greater than 20

Describe what moves you could use to create the transformation of the original image shown at right

Suppose i pick a jelly bean at random from a box containing one red and eleven blue ones. i record the color and put the jelly bean back in the box. if i do this three times, what is the probability of getting a blue jelly bean each time? (round your answer to three decimal places.)