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
Answer:
1 5/24
Step-by-step explanation:
5/6 + 3/8
LCM of 6&8=24
(5/6)*4 =20/24
(3/8)*3=9/24
20+9/24= 29/24
QRD(Quotuient,Reminder,Divisor)
= 1 5/24
B.
Answer:
x=?
Step-by-step explanation:
12xn=20xp
C. Negative because since the neutral atom stands at 0 and positive ions are 1+ and electrons are negative if it gains the electron ( negative ) it will become negative.
Answer:
I think x = 1 but I’m not sure I’m sorry
Step-by-step explanation:
