Which Ofthe Following Can Be The Value Of C(15,R)=1365?

Which ofthe following can be the value of C(15,r)=1365?

 

Answer:

4

Step-by-step explanation:

C( n, k)= n! / (n-k)! k!

C(15,r)=1365?

if r=4

C(15, 4)=15! / (15-4)! 4!

=15! / 11! 4!

=1307674368000 / (39916800)(24)

=1307674368000 / 958003200

= 1365


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