1. find the number of elements and subsets in the following set {{a, b,c, d}} 2. Solve (1*2)+(2*3)+(3*4)+...+(n*(n+1)) if n=300

Tomas used 3 1/3 cups of flour and now has 1 2/3cups left. which equation can he use to find f, the number of cups of flour he had to begin with? f+3 1/3=1 2/3 f-3 1/3=1 2/3 3 1/3f=1 2/3 f/3 1/3=1 2/3

In a certain city, the hourly wage of workers on temporary employment contracts is normally distributed. the mean is $15 and the standard deviation is $3. what percentage of temporary workers earn less than $12 per hour? a. 6% b. 16% c. 26% d. 36%

Sam is picking fruit from a basket that contains many different kinds of fruit. which set of events is independent?