Solution set of 2x–1>7 and 3x–2≤16 is
The image of point (4, -6) under the operation Mx.My is
If A = {2, 4} and B = {5, 6} then A x B ∪ ф will be:
Let a relation R be defined by R = {(4,6); (1,4); (4,6); (7,6); (3,7)} then R−1 oR is