Question

By definition r . . . . r ! 1 2 3      and

 

!

! !

n

r

n

C

r n r





, if 1 2 3

n n n C , C , C are in A.P. then value of

1 2 3

n n n C C C   is _____________.​

Answer 1

Answer:

what is this???????!???

Answer 2

Answer:

$\huge {\underline{\mathfrak {answer}}}$

write ur question properly