Question 5
In a class of 50 students, every students must offer at least one subject. 40 students offered Physics and 30 offered Biology. How many offered both Physics and Biology?
Set theory
Question 30
A bookseller sells Mathematics and English books. If 30 customers brought Mathematics books, 20 customers brought English books and 10 customers buy the two books, how many customers has he altogether?
Question 29
29. If $X=\{{{n}^{2}}+1:n=0,2,3\}$and $Y=\{n+1:n=2,3,5\}$ find $X\cap Y$
Question 21
If U ={1, 2, 3,…..10} and N ={2, 4, 6, 8 10} find N1
Question 10
Given
M = {1, 2, 3, 4, 5}
N = {1, 2, 4, 5, 3}
Z = {2, 1, 4, 5}
Which of the following is accurate?
Question 43
If Q is a factor of 18 and T is a prime number between 2 and 18. What is $Q\cap T$
Question 20
Given U = {x: x is a positive integer less than 15} and P = {x: x is even number from 1 to 14}. Find the compliment of P
Question 10
The venn diagram show a class of 50 students with the games they play. How many students play only two games
Question 4
In a school of 150 students, 80 offers french while 60 offers Arabic and 20 offer neither. How many students offer both subjects?
Question 45
Given that
M = {x : x is prime and $7\le x\le 13$}and
R = {y: y is a multiple of 3 and $6<y\le 15$}, find $M\cup R$