Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. Featured on Meta. New post summary designs on greatest hits now, everywhere else eventually. Linked 1. Related 8. Hot Network Questions. Question feed. Mathematics Stack Exchange works best with JavaScript enabled.
Accept all cookies Customize settings. It was found that out of 70 students, 20 students have passed in mathematics and failed in science and 30 students have passed in mathematics. How many students passed in science and failed in mathematics? How many students passed both subjects? Therefore, the number of students who have passed both subjects is 10 and the number of students who have passed in science and failed in mathematics is The number of elements in a set is called the cardinal number of a set.
The cardinal number for an empty or null set is always zero. The purpose of sets is to collect related objects together. Sets are important everywhere in mathematics because it uses and refers sets in some or other way. The number of distinct members of a set is called the cardinal set.
The cardinality of a set A is represented as n A , it counts the number of different elements in a set. We can find the cardinality only for the finite sets. You must be logged in to post a comment. Skip to content A set is a collection of well-defined elements. Cardinal Properties of Sets — Definition The various basic properties of sets deal with the union, intersection of two or three sets. Question 3: In a group of 80 people, 30 like jogging, 20 like swimming and 9 like jogging and swimming both.
Find: a how many like jogging only? Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Learn more. Ask Question. Asked 7 years, 2 months ago. Active 7 years, 2 months ago. Viewed 9k times. Caicedo Ujjwal Saini Ujjwal Saini 89 2 2 silver badges 4 4 bronze badges. Show 4 more comments. Active Oldest Votes.
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