11. The complement of guessing five correct answers on a five-question true-false exam is a. guessing five incorrect answers b. guessing atleast one incorrect answer c. guessing atleast one correct answer d. guessing no incorrect answers 12. The probability of an event can be any number between and including and a. 0,1 b. 1,0 c. -1,0 d. 0,-1 13. If two events are mutually exclusive, the probability that both will occur is b. 1 a. 0 c. 0.5 d. Cannot be determined

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Connections

In steel structures, connections are the members that join two or more steel members. The connections are the most important members of any steel structure, and hence, they are designed more carefully. The majority of the construction cost of steel structures is incurred due to the connections. The design of connections is done as per the recommendations and specifications of the American Institute of Steel Construction (AISC).