Question

A bag contains 5 blue marbles, 2 black marbles, and 3 red marbles. A marble is randomly drawn from the bag.
The probability of not drawing a black marble is
. The probability of drawing a red marble is
.
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Answer 1

probability of not drawing a black marble :
8/10 = 4/5

probability of drawing a red marble :
3/10

i hope this helps :)

Answer 2

Answer with Step-by-step explanation:

Probability of any event A is given by:

P(A)=no. of favorable outcomes/total no. of outcomes

A bag contains 5 blue marbles, 2 black marbles, and 3 red marbles.

A: Not drawing a black marble

P(A)=no. of marbles which are not black/total no. of marbles

     = (5+3)/(5+3+2)

     = 8/10

     =0.8

B:drawing a red marble

P(B)=no. of marbles which are red/total no. of marbles

      = 3/10

      =0.3

Hence,

The probability of not drawing a black marble is  : 0.8

The probability of drawing a red marble is :0.3