Answer:
B. 1.093
Step-by-step explanation:
I calculated it logically
12 because if u multiply 3*4 it is 12 and 4*3 is 12 so they both have 12 in common.
Answer:
122
Step-by-step explanation:

Plug in 1 for x and 11 for y

1 to the power of any number will always equal 1

I hope this helps!
We know that
The formula for combinations is
C=n!/[(n-r)!*r!]
where
n is the total number of objects you choose from
r is the number that you choose to arrange
in this problem
n=15 students
r=4 students
C=15!/[(15-4)!*4!]-----> C=15!/[11!*4!]---> (15*14*13*12*11!)/(11!*4*3*2*1)
C=(15*14*13*12)/(24)----->C=1365
the answer is
1365