alleryযদি ৪৫ জন ব্যক্তিয়ে চাহ ভাল পায় আৰু তাৰে ১৮ জনে কফিও ভাল পায়, তেন্তে কিমানজনে চাহ ভাল পায় কিন্তু কফি ভাল নাপায়?
A33
B18
C27
D63
Answer & Solution
Correct answer: C. 27
কেৱল চাহ ভাল পোৱা লোকসকল চাহৰ বৃত্তটোত থাকে কিন্তু উমৈহতীয়া অংশৰ বাহিৰত: 45 - 18 = 27।
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