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    Maths advance questions

    I have just done this and think both your answers are correct-I got the same without looking at yours first
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    any suggestions about how to approach this question on continuous pdf?

    A piecewise function f(x) is defined as follows f(x)=-x+a ,x<0 f(x)= 1/x+a, x greater or equal to 0 What value or values of a make the function continous?
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    Can someone explain to me how to do this probablily question

    5 arrangements of AAAAN. Each one has numerators 4x3x2x1x48. Denominators are 52x51x50x49x48. So 5 x(numerator product) divided by (denominator product) =1/54145
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