
Both the numerator and denominator are continuous at

, which means the quotient rule for limits applies:

Perhaps you meant to write that

instead? In that case, you would have
1.75 Grams is what I got. Every 1 Milligram = 0.001 Gram.
Hope it helps :)
The answer is A because playing sport is not affected by playing sports (for more detail go to https://www.mathsisfun.com/data/probability-events-independent.html)
If it's not A then it's B
The answer will be 100,000 I hoped this helped;)