Question

2. Let \( A=\{1,2,3\} \) and \( B=\{x \mid x \) is a prime number less than 10\( \} \). Find \( A \times B \) and 3. If \( B \times A=\{(-2,3),(-2,4),(0,3),(0,4),(3,3),(3,4)\} \) find \( A \) and \( B \). 4. If \( A=\{5.6\} \)

Answer 1

We have

B X A = {(-2, 3), (-2, 4), (0, 3), (0, 4), (3, 3), (3, 4)}

Since, First element of each ordered pair is a member of set B and second element of each ordered pair is a member of set A.

\(\therefore\) B = {-2, 0, 3} and A = {3, 4}