Answer:
'after the third round'.
Step-by-step explanation:
Let T be the number of teams after n rounds.
T=128\times(\frac{1}{2})^{n}
When T = 16, we get:16=128\times(\frac{1}{2})^{n}
Dividing both sides by 128, we get:
\frac{1}{8}=(\frac{1}{2})^{n}
Therefore n = 3
The answer is 'after the third round'.
