(a) How many different sets of three colors can be selected from the colors red, orange, yellow, green, blue, indigo, and violet? (b) In how many ways can a team of five basketball players be selected from 8 people?
(c) A race has 8 runners. In how many ways can the first three places be decided?
(d) A secretary has nine letters and only five stamps. How many ways can he select
the letters for posting?

Use the discriminant to describe the roots of each equation. then select the best description. 2m2 + 3 = m double root real and rational roots real and irrational roots non-real roots

Each person in an it department of 25 people works on at least one of 3 major projects: system security, program implementation, platform development. 10 people work on system security, 13 work on program implementation, and 12 work on platform development. 4 people work on system security and platform development, 5 people work on program implementation and platform development, and 2 people work on all three projects. how many people work on system security and program implementation?

Yahir designs bracelets. he uses between 9 and 15 red and yellow beads in the ratio of 2 red bead to 5 yellow beads. drag the beads into the container to meet these requirements