15. A box contains 50 bolts and 150 nuts. On checking the box it was found that half of the bolts and half
of the nuts are rusted. If one item is chosen at random, find the probability that it is rusted.
find the probability of not getting 4 or 5.
Answers
Answered by
4
Step-by-step explanation:
Correct option is
D
8
5
P(A)= item chosen is rusted
=
200
100
=
2
1
P(B)= item chosen is bolt =
200
50
=
4
1
P(A∩B)= item is rusted and bolt =
200
25
=
8
1
P(A∪B)= prob. of item is rusted or bolt
=P(A)+P(B)−P(A∩B)
=
2
1
+
4
1
−
8
1
=
8
5
Answered by
0
Answer:
25/75
Step-by-step explanation:
No.of favoritable out comes/total no. Of out comes.
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