KUMAR PRAKASHAN|Exercise Practice Paper - 3 (Section - D)|1 Videos
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KUMAR PRAKASHAN|Exercise Practice Paper - 1 (Section - D)|2 Videos
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Out of 100 bulbs in a box 10 bulbs are defective. Five bulbs are selected at random from it. Then find the probability of an event that selected bulb is of without defect.
Three machines A, B and C produce respectively 30%, 50% and 20% of the total number of items of a factory. The percentage of defective output of these machines are 1%, 4% and 3% respectively. If an item is selected at random, find the probability that the item is non-defective.
It is known that 10% of certain articles manufactured are defective. What is the probability that in a random sample of 12 such articles, 9 are defective?
A company has three plants at which it produces a certain item. 30% are produced at plant A, 50% at plant B and 20% at plant C. Suppose that 1%, 4% and 3% of the items produced at plants A, B and C respectively are defective. If an item is selected at random from all those produced, what is the probability that the item is defective ?
Person (A) speaks truth in 70% of cases and (B) in 80 % of cases. Find the probability of an event that in what percentage of cases are they likely to contradict each other?
Two dice are tossed once. If number 4 comes on first dice then find probability of an event that sum of numbers obtain on two dice is 8 or more.
A balanced dice is tossed (2n + 1) times. Find probability of an event that number 1 OR 3 OR 4 comes up at most n times.
A bag (I) contains 4 white and 2 black balls and bag II contains 3 white and 4 black balls. One bag is selected at random and one ball is drawn from it. Then find the probability of an event that selected ball is white.
There are 5% defective items in a large bulk of items. What is the probability that a sample of 10 items will include not more than one defective item?
KUMAR PRAKASHAN-PROBABILITY-Practice Paper - 13 (Section - D (Answer the following questions))
