Answer:
hame naghi ahta
Step-by-step explanation:
This is a geometric sequence with n th term formula
=
where r is the common ratio and the first term
here = - and
r = = = 6
= -
or in terms of x
f(x) = -
4/13 is the answer
total = 4+3+5+1= 13
let a be the event of getting red marbles= total is 4
probability=4/13