উপরোক্ত $U, A, B$ এর জন্য $A \cup B = ?$

Question

Accepted Answer

$\{1, 2, 3, 5, 7, 9, 11, 13, 15, 17, 19\}$

Answer

$\{1, 3, 5, 7, 9, 11, 13, 15, 17, 19\}$

Answer

$\{2, 3, 5, 7, 11, 13, 17, 19\}$

Answer

$\{1, 3, 5, 7, 11, 13, 17, 19\}$

উপরোক্ত U,A,BU, A, BU,A,B এর জন্য A∪B=?A \cup B = ?A∪B=?