The probability of a randomly selected shark attacking during a year is 0.0612. If a family of a shark has 3 Siblings (3 members ), find the probability that at least one of the siblings has an attack during the span of the year.

Find the probability that either event A or B occurs if the chance of A occurring is 0.5,the chances of B occurring is 0.3, and events A and B are independent.

At a local high​ school, 15​% of the students have blue eyes. Each​ day, 9​% of the​ blue-eyed students wear sunglasses on their way to​ school, while only 2​% of the students with​ non-blue eyes wear sunglasses.   Find the probability that a randomly selected student has blue eyes given that they wore sunglasses on their way to school.

A pair of dice are tossed twice. Find the probability that the first roll is a total of at least 7 and the second roll is a total of at least 6.