Answer :
Answer:
[tex]4[/tex]
Step-by-step explanation:
GIVEN: survey of [tex]11[/tex] student showed that [tex]8[/tex] liked science [tex]7[/tex] liked mathematics.
TO FIND: how many students just liked science.
SOLUTION:
number of students liked mathematics [tex]=7[/tex]
number of students liked science [tex]=8[/tex]
Total number of students [tex]=11[/tex]
[tex]\text{Total number of students} =\text{students who liked mathematics}+\text{students who liked science}-\text{students who liked both}[/tex][tex]11=7+8-\text{students who liked both}[/tex]
[tex]\text{students who liked both}=15-11=4[/tex]
Total students who just liked science [tex]=\text{total students who liked science}-\text{total students who liked both}[/tex]
[tex]=8-4=4[/tex]
Hence there are [tex]4[/tex] students who just liked science.