The probabilities that a man and his wife live for 80 years are \(\frac{2}{3}\) and \(\frac{3}{5}\) respectively. Find the probability that at least one of them will live up to 80 years
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2012
The probability that a student passes a physics test is \(\frac{2}{3}\). If he takes three physics tests, what is the probability that he passes two of the tests?
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2012
In how many ways can the letters of the word TOTALITY be arranged?
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2012
Evaluate n+1Cn-2 If n =15
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2012
Find the standard deviation of 2,3,8,10 and 12
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2012
Find the range of 4,9,6,3,2,8,10 and 11
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2012
Find the median of 2, 3, 7, 3, 4, 5, 8, 9, 9, 4, 5, 3, 4, 2, 4 and 5
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2012
The mean of seven numbers is 96. If an eighth number is added, the mean becomes 112. Find the eighth number.
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2012
Evaluate \(\int^{\frac{\pi}{4}}_0sec^2 \theta d \theta\)
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2012
Evaluate \(\int^2_1(x^2 - 4x)dx\)
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2012
If y = x2 - \(\frac{1}{x}\), find \(\frac{\delta y}{\delta x}\)
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2012
If angle \(\theta\) is 135o, evaluate cos\(\theta\)
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2012
Find the equation of the line through the points (-2, 1) and (-\(\frac{1}{2}\), 4)
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2012
The distance between the point (4, 3) and the intersection of y = 2x + 4 and y = 7 - x is
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2012
The gradient of the straight line joining the points P(5, -7) and Q(-2, -3) is