SOLUTION: In a school, every grade 10 students needs to study 7 subjects out of 14. It is given that 4 of them are core subjects, and the rest are optional. How many arrangements of the subj

Algebra ->  Permutations -> SOLUTION: In a school, every grade 10 students needs to study 7 subjects out of 14. It is given that 4 of them are core subjects, and the rest are optional. How many arrangements of the subj      Log On

 

Hi,

14 subjects:   4Core,  10optional

studying 7 ( 4 being the Core Subjects), How many arrangements:

  

Using nCr on Calculator:

 (4C4)(10C3) = 120

Wish You the Best in your Studies.