When a dice is rolled thrice, the probability of getting a number less than 5 in each roll is

## The probability of a man hitting a target is 1/4. If he fires n times such that the probability of h….

The probability of a man hitting a target is 1/4. If he fires n times such that the probability of his hitting the target at least once is greater than 2/3, then the value of n is

## Two numbers a and b are chosen at random from the set of first 30 natural numbers. The probability t….

Two numbers a and b are chosen at random from the set of first 30 natural numbers. The probability that a2 – b2 is divisible by 3 is

## The probability that the 13th day of a randomly chosen month is a Friday, is….

The probability that the 13th day of a randomly chosen month is a Friday, is

## Out of 40 consecutive integers, two are chosen at random. The probability that their sum is odd, is….

Out of 40 consecutive integers, two are chosen at random. The probability that their sum is odd, is

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## The probability that a man will live 10 more years is 1/4 and the probability that his wife will liv….

The probability that a man will live 10 more years is 1/4 and the probability that his wife will live 10 more years is 1/3. The probability that neither of them will be alive in 10 years is

## The equation of the curve that passes through the point (1, 2) and satisfies the equation  ….

The equation of the curve that passes through the point (1, 2) and satisfies the equation = is

## The solution of the differential equation + y tan x – sec x = 0 is….

The solution of the differential equation + y tan x – sec x = 0 is

## The solution of the differential equation + = x2 is….

The solution of the differential equation + = x2 is

## The solution of the differential equation y = x – 1, satisfying y(1) = 1, is ….

The solution of the differential equation y = x – 1, satisfying y(1) = 1, is

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