exam Maths Puzzle Numerical Ability

I have the sequence 2,5,9,14,20,27,35,44...

How can I find an explicit formula to find the nth term? How can I find the nth term if An = 324?

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exam Other Question

2/sqrt[3] + sqrt[2]
Can you help me rationalize the denominator? I really apprecuate your help. It would help so much if you could show me how you do this. An experiment consists of rolling one 6-sided die. Two events are defined as follow:
A = roll a five.
B = an odd number comes up.
1. Describe a sample space.
2. Find the probab