Answer:

Explanation:
The change of something happening will be in the form:
Number of that thing/Total number of things
Here, the change of bead being blue is:
The number of blue beads / total number of beads
Hence,
Number of Blue Beads = 50
Total number of beads = 100 + 50 + 50 = 200
Hence,
The chance of bead being blue =
