What is the 11th term of the sequence: m2n,mn,m,...?

×
m+n

×
m+6n

✓
m+8n

×
m+11n
What is the 11th term of the sequence: m2n,mn,m,...?
m+n
m+6n
m+8n
m+11n
From the given sequence, there observed the series is an arithmetic sequence , in which a_1=m2n, d=n.
Using the formula for general terms of an arithmetic sequence,
a_n=a_1+(n1)d
a_{11}=m2n+10n
Therefore, a_{11}=m+8n