If the relation `R={(a b)|a in N a<6 and b=4}` then range of R is
a) {1 2 3}
b) {1 2 3 4}
C) {4 5}
d) {4}

If the arithmetic mean of 0, 5, 4, 3 is a , that of -1, 0, 1, 5, 4, 3 is b and that of 5, 4, 3 is c , then the relation between a , b and c is a=b=c (b) a : b : c=3:2:4 (c) 4a=5b=c (d) a+b+c=12

Match the following. Codes A B C D (A) 4 3 1 2 (B) 2 4 1 3 (C) 3 4 2 1 (D) 3 4 1 2

Is the relation R in the set A={1,2,3,4,5} defined as R={(a,b):b=a+1} reflexive ?

1) If A=[(1,2),(3,4)] , AdjA=[(4,a),(-3,b)] then the values of a and b are ..... a) a=-2, b=1 b) a=2, b=4 c)a=2, b=-1 d) a=1, b=-2

If R = {(a,b) : a+b=4} is a relation on {1,2,3} , then R is

Show that the relation R in the set A={1,2,3,4,5} given by R={(a,b):|a-b| is even }, is an equivalence relation.

Match List I with list II and select the correct answer: List I List II (a , b as given in Euclidean algorithm (Values of q and r ) a=b q+r ) a=-112 , b=-7 q=-13 , r=1 B. a=118 , b=-9 q=14 , r=3 C. a=-109 , b=6 q=-19 , r=5 D. a=115 , b=8 q=16 , r=0 A B C D A B C D (a) 3 1 4 2 (b) 3 2 4 1 (c) 4 1 3 2 (d) 4 2 3 1

If A={1,2,4},B={2,4,5},C={2,5},t h e n(A-B)xx(B-C) is (a){(1, 2), (1, 5), (2, 5)} (b) {(1, 4)} (c) (1, 4) (d) none of these.