i want proper explanation Q.No: 15
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Anonymous:
Ans : 13/15.
Really sorry but it isn't for 7th class. I didn't knew that probability could be difficult.
ok fine thanks for your helping gesture.
:)
Answers
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Hey there!
Answer:
13/15
Step-by-step explanation:
P (No defective) = (8/10) * (7/9) * (6/8) * (5/7) = 1/3
P (1st def.) = (2/10) * (8/9) * (7/8) * (6/7) = 2/15
P (2nd def.) = (8/10) * (2/9) * (7/8) *(6/7) = 2/15
P (3rd def.) = (8/10) * (7/9) * (2/8) * (6/7) = 2/15
P (4th def.) = (8/10) * (7/9) * (6/8) * (2/7) = 2/15
Now,
P (not more than 1 defective) = P (No defective) + P (one)
= P (no defective) + P ( 1st def.) + P (2nd def.) + P (3rd def.) + P (4th def.)
= 1/3 + (2/15 + 2/15 + 2/15 + 2/15)
= 1/3 + 4 * 2/15
= 13/15
Hope It Helps You!
Thank you so much
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Can i help me to get the solutions of some questions. But here nobody is helping me in here if you don't mind will you help me.
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