A survey of 50 students of a computer class gave the following data:
26 know PASCAL,
18 know FORTRAN,
30 know COBOL,
9 know both Pascal and FORTRAN,
16 know both Pascal and COBOL,
8 know both FORTRAN and COBOL,
43 know at least one of the three languages.

1. From this we have to determine
a. How many students know none of these languages?
b. How many students know all three languages?

Question

A survey of 50 students of a computer class gave the following data:
    26 know PASCAL, 
    18 know FORTRAN, 
    30 know COBOL, 
    9 know both Pascal and FORTRAN, 
    16 know both Pascal and COBOL, 
    8 know both FORTRAN and COBOL, 
    43 know at least one of the three languages. 

1.	From this we have to determine                                                          
    a. How many students know none of these languages?                 
    b. How many students know all three languages?

anonymous · Answer

2.	Find the number of ways in which a teacher can select a team of 3 students from the class to work on a group project such that 1 student from each category.(that is one from those who knows PASCAL one from those who knows FORTRAN and one from those who knows COBOL).                                               
3.	Find the number of words that can be formed from the letters of the word FORTRAN.								 
4.	Find the number of words that can be formed from the letters of the word FORTRAN if the two R’s are to be next to each other.

anonymous · Answer

Thanks and there is also 3 more question... plz solve it

amistre64 · Answer

we are not here to be a free answering service

If you can tell us what it is that you are not understanding, then we would be happy to try to teach you the material; as opposed to just doing your work for you.