If a and b are positive integers, and $rac{a}5 + rac{b}7 = rac{31}{35}$, what is the value of a and what is the value of b?

Sep 24, 2017 20:01:30 UTC

The mode of four numbers is 11, the median is 12, and the mean is 13. What is the greatest of the four numbers?

Sep 24, 2017 20:01:30 UTC

Using only the digits 1, 2, and 3, Julia lists all the possible three-digit numbers. In a given number the same digit can appear more than once. She chooses one of the numbers at random. What is the probability that the number she chooses is a multiple of 1?

Sep 24, 2017 20:01:30 UTC