If `a in {2,4,6,9}a n d\ b in {4,6, 18 , 27}` , then from the set of al ordered pairs `(a , b)` such that a divides `b and a

x in{2,4,6,9} and yin{4,6,18,27,54} . Form all ordered pairs (x,y) such that x is factor of y and xley .

If a ,b in {1,2,3,4} and a x^2+b x+1=0 has real roots then number of possible ordered pairs of (a , b) is (a)6(b) 7 (c) 10 (d) 12

Express A={(a ,b):a+b=4,a ,b in W} as the set ordered pairs.

Express A={(a ,b):2a+b=5,a ,b in W} as the set ordered pairs.

If A = {2,4,6,8} , B = {3,6,9,12} and C = {0,5,10,15} then the overlapping sets are (a) A and B (b) B and C (c) A and C (d) none of these

If R is a relation from set A={2,4,5} to set B={1,2,3,4,6,8} defined by x R yhArrx divides ydot Write R as a set of ordered pairs Find the domain and the range of Rdot

If the sets A = {1,3,5}, B = {2,4,6} and C = {0,2,4,6,8} . Then, the universal set of all the three sets A, B and C can be "………"

If A={a,b,c} and B={1,2,3,4} . Then all possible ordered pairs such that in each ordered pair the first component is an element of set A and second component is an element of set B are obtained by pairing each element from set A with each element form set B. This can be done by the following scheme:

The number of positive integral ordered pairs of (a ,b) such that 6,a ,b are in harmonic progression is _________.

If M={3,6,9,18,27} and N={1,3,9,27} then M cup N is