एक कक्षा में (95) विद्यार्थियों में (56) गणित, (49) विज्ञान और (27) दोनों पढ़ते हैं। ठीक एक विषय पढ़ने वाले कितने हैं?
In a class of (95) students, (56) study Mathematics, (49) study Science and (27) study both. How many study exactly one subject?
Explanation opens after your attempt
A. (51)
Concept
Exactly one subject is ((56-27)+(49-27)=51). Do not include those who study both in exactly one.
Why this answer is correct
The correct answer is A. (51). Exactly one subject is ((56-27)+(49-27)=51). Do not include those who study both in exactly one.
Exam Tip
ठीक एक विषय ((56-27)+(49-27)=51) है। दोनों पढ़ने वालों को ठीक एक में शामिल न करें।
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