G9Math Q001

1. Let n(P) denotes the number of elements in set P. Given that n(P)=2 and n(Q)=5
   is
   A.5 B.2 C.3 D.7 E.8
   20.Which of the following is (are) true?

{x\x is an odd number}

A.1 only   B. 2 only    C.3 only     D . 1,2 and 3    E. None of these

21.How many subsets of A\B if A={2,3,5,8} and B={x\x3-8x+15=0}
A.4 B.8 C.16 D. 32 E.2
is
A.4 B.8 C.16 D. 32 E.2
,which of the following is false?
A∪B=A E.None of these
is
A. 2 B. 3 C. 4 D.6 E.8
B)=4, then number of the elements of A which are not the
element of B is
A. 3 B.6 C. 8 D. 11 E. 14
B) =9 , n(A\B)=7. then n(B\A)=……….
A. 12 B. 16 C. 21 D. 19 E. 5

1. If A={1,3,5,7,9} and B´={1,2,3,4,5} , then A\B=……
   A.{7,9} B.{2,4} C.{1,3,5} D. {1,2,3,4,5,7,9} E. None of these
   (B\A)=………
   B.{1,3,5} C. {2,3,4,6,8} D.{1,2,3,4,5,6,7,8} E.It is impossible to determine
   B=…….
   A. {5} B.{3,4} C.{3,4,5} D.{1,2,3,4} E. S
   Q)=…….
   A.2 B.4 C.6 D.8 E.10
   B)=55,then(B´)=….
   A. 275 B.225 C.125 D.325 E.175
   32.For the Venn diagram, which of the following is (are) true;
   Y={3,4} 2. X\Y={1,2} 3.Y\X={5,6}

   A.1 only B. 2 only C. 3 only D. 2 and 3 only E. 1,2 and 3
   33.If P={a,b} and Q={x,y} , then PxQ=……….
   A. {(a,x),(b,y)} B. {(a,x),(a,y)} C. {(a,x),(a,y),(b,x),(b,y)}
   D.{(x,a),(x,b),(y,a),(y,b)} E.{(x,a),(y,b)}

2. Given that BxA={(2,1),(2,2),(x,1),(x,2)}.Then AxA=……….
   A. {1,2} B.{(2,2),(2,x),(x,2),(x,x)} C.{(1,2),(2,1)}
   D. {(1,1),(1,2),(2,1),(2,2)} E. {(1,1),(2,2),(x,x)}

3. If W={x,y} ,which of the following is falsfe?
   WxW
   36.If n(AxB)=24 and n(BxB)=36 ,then the largest possible value of n(AB) is……
   A.6 B. 4 C.2 D.10 E.12