exam Maths Puzzle Numerical Ability

6xy^3 * 35x^4y^5 * 33y
----- -------- ----- =
5x^2 22xy^2 14x^5

I can't seem to get the problem to

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exam Other Question

For the following probability distribution u=_____

xi 250/300/400
pi 0.30/0.50/0.20 Input: 3, 4, 5, 6 Output: 13, 15, 17, 19

Does this represent a function? If it does, list the domain and range. Explain what a domain and range are