Two squares are chosen at random on a chessboard. What is the probability that they have a side in common?
An experiment succeeds twice as often as it fails. What is the probability that in the next 5 trials there will be four successes?
A man can hit a target once in 4 shots. If he fires 4 shots in succession, what is the probability that he will hit his target?
A number is selected at random from first thirty natural numbers. What is the chance that it is a multiple of either 3 or 13?
When two dice are thrown simultaneously, what is the probability that the sum of the two numbers that turn up is less than 11?
An experiment succeeds twice as often as it fails. What is the probability that in the next 5 trials there will be four successes?
A man can hit a target once in 4 shots. If he fires 4 shots in succession, what is the probability that he will hit his target?
A number is selected at random from first thirty natural numbers. What is the chance that it is a multiple of either 3 or 13?
When two dice are thrown simultaneously, what is the probability that the sum of the two numbers that turn up is less than 11?
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