यदि (n(U)=30) और (n(A)=18) है, तो (n(A')) कितना होगा?
If (n(U)=30) and (n(A)=18), what is (n(A'))?
Explanation opens after your attempt
A. (12)
Concept
(n(A')=n(U)-n(A)=30-18=12). For complement, subtract rather than add.
Why this answer is correct
The correct answer is A. (12). (n(A')=n(U)-n(A)=30-18=12). For complement, subtract rather than add.
Exam Tip
(n(A')=n(U)-n(A)=30-18=12)। पूरक में जोड़ नहीं, घटाना होता है।
Login to save your score, XP, coins and progress.
