The table below gives probabilities for various combinations of events A, B, and their complements. Probability of being in each cell of a two-way table . A not A B 0.4 0.2 not B 0.3 0.1 Find P(A). Enter the exact answer. P(A)= Enter your answer in accordance to the question statement

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