MEDIUM
CAT
IMPORTANT
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A batch of transistors contains defective ones. Two transistors are selected at random from the batch and put into a radio set. What is the probability that both the transistors selected are defective?
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Important Questions on Probability
MEDIUM
CAT
IMPORTANT
A batch of transistors contains defective ones. Two transistors are selected at random from the batch and put into a radio set. What is the probability that only one is defective?
EASY
CAT
IMPORTANT
A batch of transistors contains defective ones. Two transistors are selected at random from the batch and put into a radio set. What is the probability that neither is defective?
EASY
CAT
IMPORTANT
The probability that a man will be alive in years is and the probability that his wife will be alive is . Find the probability that after years.
both will be alive.
EASY
CAT
IMPORTANT
A speaks the truth out of times, and B out of times. What is the probability that they will contradict each other in stating the same fact?
EASY
CAT
IMPORTANT
A party of n persons sit at a round table. Find the odds against two specified persons sitting next to each other.
EASY
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IMPORTANT
If whole numbers are taken at random and multiplied together, what is the chance that the last digit in the product is or ?
EASY
CAT
IMPORTANT
In four throws with a pair of dices what is the chance of throwing a double twice?
EASY
CAT
IMPORTANT
A life insurance company insured young boys, young girls, and young adults. The probability of death within years of a young boy, young girl, and a young adult are and respectively. One of the insured persons dies. What is the probability that the dead person is a young boy?
