Afair coin tossed 3 times in a row. what is the probability that heads appear on only the last toss?

Select all the expressions that will include a remainder.

Scores on a university exam are normally distributed with a mean of 78 and a standard deviation of 8. the professor teaching the class declares that a score of 70 or higher is required for a grade of at least “c.” using the 68-95-99.7 rule, what percentage of students failed to earn a grade of at least “c”?

Use pascal's triangle to find the missing values. x4 - 4xb + 6x2 - ax + 1