यदि (n(A)=60), (n(B)=55), (n\(A\cap B\)=25) है, तो ठीक एक समुच्चय में आने वाले तत्वों की संख्या क्या है?
If (n(A)=60), (n(B)=55), and (n\(A\cap B\)=25), what is the number of elements belonging to exactly one set?
Explanation opens after your attempt
A. (65)
Concept
Exactly one is ((60-25)+(55-25)=65). Subtract the common elements separately from both sets.
Why this answer is correct
The correct answer is A. (65). Exactly one is ((60-25)+(55-25)=65). Subtract the common elements separately from both sets.
Exam Tip
ठीक एक (=(60-25)+(55-25)=65)। दोनों में आने वालों को दोनों समुच्चयों से अलग-अलग घटाएं।
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