a bag with 10 marbles has 3 yellow marbles , 2 blue marbles, and 5 red marbles. A marble is chosen from the bag at random. What is the probability that it is yellow or blue? Write your answer as a fraction in simplest t form! (PLEASE HELP ASAP!! I WILL MARK BRAINLIEST! C: )

The table below shows the approximate masses of a dust particle and a grain of pollen. dust particle 0.000000778 g grain of pollen 0.00000000155 g the mass of a dust particle can be estimated and written in the form a × 10^b, where a = 8 and b = the mass of a grain of pollen can be estimated and written in the form a × 10^b, where a = 2 and b = based on the estimates, the mass of a dust particle is approximately blank times larger than the mass of a grain of pollen.