Aspinner is divided into eight equal sections. five sections are red and three are green. if the spinner is spun three times, what is the probability that it lands on red exactly twice.

Find the greatest common factor of the followig monomials 21u^5v,3u^4v^6, and 3u^2v^5

Money off coupons have been circulated to 300 households. only 2/5 of these were redeemed (used) in the local supermarket to get a free shampoo. what fraction of coupons were unused? (ps: write how you got the answer)

What is the sum of the first 8 terms of the geometric series