There are 12 beads in a bag.3are black , 4 are white and 5 are red .A bead is picked at random .Find the probability that it will be
a) black
b) white or red
c) not red
Answers
Answered by
2
Step-by-step explanation:
the first answer is.... 1/4
the second answer is.... 3 + 5 = 8
8 / 12 = 2/3
and the third answer is.. 7 / 12
Answered by
4
Answer:
a) no of black beads = 3
no of total beads = 12.
probability of getting a black bead = 3/12
=1/4 is the answer.
b) no of white beads=4
total no of beads=12.
probability of getting a white beads= 4/12
= 1/3 is the answer.
no of red beads=5
total no of beads=12
probability of getting a red bead
=5/12 .
c) no of beads which are not read = 7
total no of beads = 12.
probability of getting a not red bead = 7/12.
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