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Do anyone know where to find answers for pre-1995 hsc mathematics extension 2 papers? Thanks

Hey guys, can anyone do these question for me A tank contain 20 tagged fish and 80 untagged fish. On each day, four fish are selected at random, and after nothing whether they are tagged or untagged, they are returned to the tank. Answer the following to 3 sig fig. What is the proaability...

Hey guys, Can you please help me with this question By considering its prime factorisation, find the number of positive divisors of 315000 The answer is 120

Hey guys, I need help with this question A die fits perfectly into a cubical box. How many ways are there of putting the die into the box? The answer is 24. I don't know how to get the answer Help please.

Hey guys, Does anyone know how to do this question 'The six faces of a number of identical cubes are painted in six distinct colors. How many different cubes can be formed?' The answer is 120 but i don't know how to get 120. Any help is appreciated.