The chances of Mahir winning all 3 games against James is 0.064
<u>Explanation:</u>
Given:
James chances of winning = 60%
Therefore,
Mahir chances of winning = 100 - 60%
= 40%
Total number of matches = 3
Total percent of winning = 100%
Thus,
The chances of Mahir winning = 
= 0.064
Therefore, the chances of Mahir winning all 3 games against James is 0.064