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Maths Puzzle
Numerical Ability
(x2+1/x2)(x+1)
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In a certain country, there is a bank failure once every six days, on average. What is the probability of at least one bank failure in the next 30 days?
Is this set up 1 less 1/6?
If f(x) = x2 + 5, find f(a + h) − f(a)