This will take roughly 3 minutes,
First i'm assuming this is an arithmetic sequence since using the recurring formula;
156250=781250+d
where d is the common difference
d=-625000
Using the implicit relation we can then say;
u(N)=u⁰+nd
where are looking for u⁷ since our first term is u⁰, second is u¹....8th is u⁷
u(7)=781250-6250000
u(7)=-5868170
No it's not 10 if this is arithmetic sequence.
If this sequence is geometric then,
r=156250/781250
r=1/5
So we're diving by 5
we can use the implicit relation which states:
u(n)=u⁰r^n
u(7)=781250×1/5^7
u(7)=10
THIS IS A GEOMETRIC SEQUENCE AND THE 8TH TERM IS 10 SO THIS THIS TRUE HURYY