I have no time now. But will answer all these a bit later.Due to a math test I could not go to the extra class on Friday to get help on my tutorial, so I thought I'd ask here...

My solution:

Okay now I got . But to me it is a bit of a elementary approach to just keep changing the value for and seeing what I get. Is there a method to solve this?

My solution:

Okay now I used negative binomial distribution on this. The thing is we want 3 successes, so . I was struggling with thinking of a value for , but logic tells me it must be a multiple of 3?

My solution:

a)

b)

c)

Okay something isn't right with my number . If i let I get the probability is but if I let it ends up greater than one.

My solution:

Let be a uniform random variable on [0;1], and let

Differentiate.

Just when I thought i was done with physics forever...

My solution:

Differentiate. (Assuming the mass is a constant)

What the freak are these people on about??

My solution:

Differentiate.

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Thanks in advance