Abag is filled with 200 silver coins and 123 gold coins. what is the theoretical probability of not pulling out a silver coin

12 out of 30 people chose their favourite colour as blue caculate the angle you would use for blue on a pie chart

Events a and b are independent. the probability of a occurring is 2/5. the probability of b occurring is 1/4. what is p(a and b)?

Apyramid fits exactly inside a cube. the cube and the pyramid share the same square base, and they are both exactly the same height. the volume of the cube is 66 cubic inches. what is the volume of the pyramid? explain your answer. answer asap