allery60 জন শিক্ষার্থীর একটি ক্লাসে 35 জন গণিত পছন্দ করে, 30 জন বিজ্ঞান পছন্দ করে এবং 15 জন উভয় বিষয়ই পছন্দ করে। কতজন কেবল গণিত পছন্দ করে?
A15
B20
C25
D30
Answer & Solution
Correct answer: B. 20
কেবল গণিত = n(Math) - n(Math ∩ Science) = 35 - 15 = 20।
Keep practising Venn Diagrams
Browse all Venn Diagrams questions for RRB NTPC, or explore more General Intelligence and Reasoning topics.
Related questions
RRB NTPC · Set Operations PracticeRRB NTPC · Two-Set Venn CalculationsIn a test of 60 candidates, 40 passed Paper 1, 35 passed Paper 2, and 25 passed both. How In a group of 50 students, 30 like Blue, 25 like Green, and 10 like neither. How many likeOf 40 players, 22 play Cricket, 20 play Hockey, and all play at least one of these two spoIn a school, 80 students take Art, 60 take Music, and 30 take both. How many take at leastIn a group of 70 people, 40 drink Tea, 35 drink Coffee, and 15 drink neither. How many driWhich relationship best describes: Teachers, Authors, Men?