Question

If R is the set of all integers with absolute value less than 10, A is its subset containing all natural numbers less than 10 and B is the set of all integer solutions of inequality 2x+5<9 that are les than 10 by absolute value (and therefore, is also a subset of R), draw Venn diagram showing these sets. List elements of sets A, B, their union, and their intersection.

Answer 1

A=1, 2, 3, 4, 5, 6, 7, 8, 9

B= -9, -8, -7, -6, -5, -4, -3, -2, -1, 0, 1

Union: -9, -8, -7, -6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9

Intersection: 1