1. It is a group of well-defined and distinct objects with common characteristics. a complement b. elements C. sets d. universal set 2. Which of the following sets describes infinite set? a. The set of whole numbers c. The set of months of the year b. The set of English Alphabet d. The set of natural numbers less than 100 3. Which of the following elements of a set illustrates the set of numbers which are multiples of 3 and less than 12? a {} b. {3, 6, 9} c. {3, 6, 9, 12) d. {1,2,3,4,5,6,7,8,9,10,11) 4. Which of the following is the symbol of an empty set? a. n b. U d. 5. Which of the following is a subset of A= {1,2,3)? a.{0} b. {0,1} C. {1,2} d. {2,3,4 6. Given the set of letters in the word "mathematics", what is the cardinality of the given set? a. 11 b. 8 d. 4 C. {} C. 6​