HALP ME PLEASE HURRY PEALSE

How to determine whether two known pairs of points are on the same line.

One card is dealt from a 52 card deck. find the probability that the dealt card is a 4 or a black 7

Consider a cube that has sides of length l. now consider putting the largest sphere you can inside this cube without any point on the sphere lying outside of the cube. the volume ratio -volume of the sphere/ volume of the cube is 1. 5.2 × 10−1 2. 3.8 × 10−1 3. 1.9 4. 2.5 × 10−1 5. 3.8