alleryاگر P = {1, 2, 3, 4, 5} اور Q = {4, 5, 6, 7}، P میں کتنے عناصر ہیں لیکن Q میں نہیں؟
A2
B4
C3
D5
Answer & Solution
Correct answer: C. 3
مشترکہ 4 اور 5 کو P سے ہٹانے سے 1، 2 اور 3 نکل جاتا ہے۔
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