The list is 
Observe the pattern, the difference between consecutive numbers is
.

Let n be the next term.
\Write an equation for the situation.
\Previous term + 10 = Next term. \ \
\
(Substitute previous term = 50 and next term = n)
(Add:
)
The extended pattern is
\
The next term in the given list is
.
The next term in the given list is
.