Question

Hey survey of 11 student showed that 8 liked science 7liked mathematics and for like both how many students just liked science?

Answer 1

`4`

Explanation:

GIVEN: survey of
`11` student showed that
`8` liked science
`7` liked mathematics.

TO FIND: how many students just liked science.

SOLUTION:

number of students liked mathematics
`=7`

number of students liked science
`=8`

Total number of students
`=11`

`\text{Total number of students} =\text{students who liked mathematics}+\text{students who liked science}-\text{students who liked both}`
`11=7+8-\text{students who liked both}`

`\text{students who liked both}=15-11=4`

Total students who just liked science
`=\text{total students who liked science}-\text{total students who liked both}`

`=8-4=4`

Hence there are
`4` students who just liked science.