allery200 कुटुंबे असलेल्या एका गावात, 120 कुटुंबांकडे गाई आहेत आणि 90 कुटुंबांकडे शेळ्या आहेत; 30 कुटुंबांकडे दोन्ही आहेत. यांपैकी काहीही नसलेली किती कुटुंबे आहेत?
A20
B10
C30
D40
Answer & Solution
Correct answer: A. 20
किमान एक प्राणी असणारी कुटुंबे = 120 + 90 - 30 = 180, म्हणून 200 - 180 = 20 कुटुंबांकडे काहीही नाही.
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