A and B are two sets. The number of elements in A∪B is 49, the number in A is 22 and number in B is 34. How many elements are in A ∩ E?

Assessment: WAEC SSCE - General Mathematics - 1997 (Objective) Subject: General Mathematics

Question 1 Report

A and B are two sets. The number of elements in A∪B is 49, the number in A is 22 and number in B is 34. How many elements are in A ∩ E?
Answer Details
To find the number of elements in the intersection of A and B, we can use the formula: |A ∪ B| = |A| + |B| - |A ∩ B| We are given |A ∪ B| = 49, |A| = 22, and |B| = 34. Substituting these values into the formula gives: 49 = 22 + 34 - |A ∩ B| Simplifying, we get: |A ∩ B| = 22 + 34 - 49 = 7 Therefore, there are 7 elements in the intersection of A and B. The correct answer is 7.
Read lesson note on Sets (WAEC)
Read lesson note on Sets (JAMB)
View Answer

Related Questions

1

Solve me equation: 2/3 (x + 5) = 1/4(5x - 3)
2

Simplify log39 + log315 - log35
3

A student found the approximate value of 0.02548 correct to two places of decimal instead of two significant figures. Find the percentage error.
4

Make q the subject of the relation t = √pq/r - r2
5

Which of the following equations has its roots as 4 and -5?
6

If P = {3, 5, 6} and Q = {4, 5, 6} then P∩Q equals
7

Express (0.0425 / 2.5) as a fraction
8

Solve the equations: 4x -y = 11; 5x + 2y = 4.

Download The App On Google Playstore

Everything you need to excel in your exams

Green Bridge CBT Mobile App
Personalized AI Learning Chat Assistant
200,000+ Exam Questions Across IGCSE, JAMB, WAEC & NECO
Over 3,900 Lesson Notes
Offline Support - Learn Anytime, Anywhere
Green Bridge Timetable
Literature Summaries & Potential Questions
Track Your Performance & Progress
In-depth Explanations for Comprehensive Learning