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A box contains beads of different colors...

A box contains beads of different colors There are total 200 beads in it One bead is taken at random The probability that it is blue is `0.98` Then,
a) How many blue beads are there in the box?
b) Some blue beads are removed from the box Now probability of blue bead becomes 0.96 So how many blue beads are removed?

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