TMA2/MTH211

TMA Quiz Questions TMA: TMA2/MTH211 Matric Number:  SCORE=10.00 MTH211 - SET THEORY AND ABSTRACT ALGEBRA Mr Ogundipe Olalekan (oogundipe@noun.edu.ng ) 1 Let Z be a complex number, then Z.Z¯$$Z.\overline{Z}$$ is ........  a prime number  a non-negative real number a natural number  an irrational number 2 A ………… of an Abelian group is Abelian set subset group subgroup 3 One of the following is untrue for the description of a non empty set An element can be written more than once The order in which the elements of the set are listed is not important. The roster method is sometimes used to list the elements of a large set  Every element must be written exactly once . 4 A = {x / x is an odd number between 5 and 21} is same as------------ A = {5,7,9,11,13,15,17,19} A = {5,7,9,11,13,15,17,19,21} A = {x : x is an odd number between 5 and 21} A = {7,9,11,13,15,17,19,21} 5 The following are true except If every element of a set B is an element of a set A, then B is a subset of A. A is a subset of B is denoted by A⊂B$$A\subset B$$ Two sets A and B are equal if and only if A⊆B$$A\subseteq B$$ and B⊆A$$B\subseteq A$$  Two sets A and B are equal if and only if A = -B and B = A 6 Given that S = { a, b, c, d , e } and T = { a, c, e }, then one of these is untrue T is a subset of S T⊆S$$T\subseteq S$$ S≠T$$S\ne T$$ S⊆T$$S\subseteq T$$ 7 Given that A ={ a, b, c, d , e } and B = { a, c, e }, then B is a …….. of A. set  subset subscribe subscript 8 If A = { a + i b / a, b ϵ R }, then A is a set of ……… numbers rational natural real complex 9 …………… is the set of natural numbers {1, 2, 3, ……} {0,1, 2, 3, ……} {±1, ± 2, ± 3 …… } {0, ±1, ± 2, ± 3 …… } 10 One of the following truly represents a set {1, 3, 1, 6, 7} {1, 3, 6, 7} {1, 3, 6, 7,1} {1, 1, 3, 6, 7}