Let f = {(1,1), (2,4), (3,7), (4,10)}

Consider the following statements:
I. f is a one-one function.
II. f is an onto function if the codomain is the set of natural numbers.
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…

The probability of a man hitting a target is 1/5. If the man fires 7…

If two fair dice are tossed, then what is the probability that the sum of…

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