The question is an illustration of combination, and there are 1820 ways to select the 12 students
The distribution of the students is given as:
Senior = 7
Junior = 5
Sophomore = 4
The total number of students is:
Total = 7 + 5 + 4
Evaluate
Total = 16
To select 12 students from the 16 students, we make use of the following combination formula
Ways = 16C12
Evaluate the expression using a calculator
Ways = 1820
Hence, there are 1820 ways to select the 12 students
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