The first option, on the top left!
21 could be the answer for sure
Answer:
It's the first choice.
Step-by-step explanation:
The first term is the value of n / (2n +1) when n = 1
So first term = 1 (2 + 1) = 1/3
Second term = 2/(2(2) + 1) = 2/5
Third term = 3 / (3(2) + 1) = 3/7 and so on.
