allery200 కుటుంబాలు ఉన్న ఒక గ్రామంలో 120 కుటుంబాలకు ఆవులు, 90 కుటుంబాలకు మేకలు ఉన్నాయి; 30 కుటుంబాలకు రెండూ ఉన్నాయి. రెండింటిలో ఏదీ లేని కుటుంబాలు ఎన్ని?
A20
B10
C30
D40
Answer & Solution
Correct answer: A. 20
కనీసం ఒకదానిని కలిగి ఉన్నవారు = 120 + 90 - 30 = 180, కాబట్టి 200 - 180 = 20 కుటుంబాలకు ఏదీ లేదు.
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