allery120 ਦੇ ਇੱਕ ਸਰਵੇਖਣ ਵਿੱਚ, 70 ਨੂੰ ਸੇਬ ਪਸੰਦ ਸਨ ਅਤੇ 50 ਨੂੰ ਅੰਬ ਪਸੰਦ ਸਨ; 20 ਨੂੰ ਦੋਵੇਂ ਪਸੰਦ ਸਨ। ਕਿੰਨੇ ਲੋਕਾਂ ਨੂੰ ਸਿਰਫ਼ ਸੇਬ ਪਸੰਦ ਸਨ?
A50
B60
C30
D40
Answer & Solution
Correct answer: A. 50
ਸਿਰਫ਼ ਸੇਬ = 70 - 20 = 50 ਲੋਕ ਸੇਬ ਦੇ ਚੱਕਰ ਵਿੱਚ ਪਰ ਓਵਰਲੈਪ ਤੋਂ ਬਾਹਰ।
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