Mildred has three little girls, Margo, Delilah, and Gertrude. If she randomly chooses one of them to clean the kitchen after dinner, what is the probability that she will NOT pick Gertrude

Prism m and pyramid n have the same base area and the same height. cylinder p and prism q have the same height and the same base perimeter. cone z has the same base area as cylinder y, but its height is three times the height of cylinder y. the figures and have the same volume.