For the probability of drawing a red bead to be one third then one third of the bead would need to be red. The number of red beads is 78 so twice as many should be 'not red' (156), at present the 'not red' beads (yellow and green) total 109, so to make the number up to the required 156 a further 47 beads need to be added so the number of blue beads needed is 47.
How many total beads are there. Are the beads only red or blue?
There could be literally any number of blue beads - there is no rule that says you have to have so many blue beads for every black bead!
32 blue, 8 red
There is no way to answer this because we don't know the ration of blue to black beads
None. The beans are blue, not red.
98 markers.He has 98 in all.