A red box contains 8 items of which 3 are defective, and a blue box contains five items of which 2 are defective an item is drawn at random from each box. what is the probability that both items are non defective
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Answered by
0
Answer:
RED BOX=8 ITEMS
3 DEF
BLUE BOX=5 ITEMS
2 DEF
- PROBABLITY=DEF OF RED+DEF OF BLUE/ITEMS OF RED+ITEMS OF BLUE
- PROBABLITY=3+2/8+2
- =5/10
- =1/2
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Answered by
1
Answer:
The answer is 9/40.
Explanation:
Red box - 3/8 defective pieces
Blue box - 2/5 defective pieces
Both the probabilities will get added.
3/8+2/5 = 15+16/40 = 31/40
Now, this is the probability of defective pieces. From this calculation we get to know the total number of outcomes will be 40.
So, the probability of non-defective pieces are --> 40/40-31/40
Hence the answer is 9/40.
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