Question
In a school of 120 students, 70 like maths, 60 like science and 30 like both subjects. How many students like neither subject? / 120 विद्यार्थियों के एक विद्यालय में 70 गणित, 60 विज्ञान पसंद करते हैं और 30 दोनों विषय पसंद करते हैं। कितने विद्यार्थी कोई भी विषय पसंद नहीं करते?
Option 1 : 20 / 20
Detailed Solution
सही उत्तर 20 / 20 है।
Students liking at least one subject = 70 + 60 - 30 = 100. So students liking neither = 120 - 100 = 20. / कम से कम एक विषय पसंद करने वाले = 70 + 60 - 30 = 100। अतः कोई विषय पसंद न करने वाले = 120 - 100 = 20।
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prepsnap.in • Numerical AbilityQuestion:
In a school of 120 students, 70 like maths, 60 like science and 30 like both subjects. How many students like neither subject? / 120 विद्यार्थियों के एक विद्यालय में 70 गणित, 60 विज्ञान पसंद करते हैं और 30 दोनों विषय पसंद करते हैं। कितने विद्यार्थी कोई भी विषय पसंद नहीं करते?
Correct Answer: 20 / 20
Students liking at least one subject = 70 + 60 - 30 = 100. So students liking neither = 120 - 100 = 20. / कम से कम एक विषय पसंद करने वाले = 70 + 60 - 30 = 100। अतः कोई विषय पसंद न करने वाले = 120 - 100 = 20।