Let the function f(x) = x² + 9

Consider the following statements:
I. f(x) is an increasing function.
II. f(x) has a local maximum at x = 0
Which of the statements given above is/are correct?

What is the arithmetic mean of 8², 9², 10², …, 15²?

Let X be a random variable following binomial distribution whose mean and variance are 200…

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If P(A) = 1/3, P(B) = 1/2 and P(A ∩ B) = 1/4, then what…