Which fraction will replace the question mark (?) in the following series?
$$\frac{1}{4}, \frac{3}{5}, \frac{6}{7}, \frac{10}{11}, ?$$
Numerator -> 1,3,6,10,15 ( Difference between digits is being increased by 1)
Denominator -> 4,5,7,11,19 ( Difference between digits is being doubled)
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