Q. 5: In which of the following years were there two or more contracts?
Q. 6: Which of the following is true?
Q. 7: In how many years during this period was there only one contract?
Q. 8: What BEST can be concluded about the number of contracts in 2010?
a. exactly 3
b. at least 3
c. at least 4
d. exactly 4
Q. 9: Which institutes had multiple contracts during the same year?
Q. 10: Which institutes and vendors had more than one contracts in any year?