To find the probability that Leah rolls a 6 two times in a row on a normal six-sided die, we first determine the probability of rolling a 6 in a single roll.
The probability of rolling a 6 on a six-sided number cube is:
\[ P(6) = \frac{1}{6} \]
Since the rolls are independent events, the probability of rolling a 6 two times in a row is the product of the probabilities of each roll:
\[ P(\text{two 6s}) = P(6) \times P(6) = \frac{1}{6} \times \frac{1}{6} = \frac{1}{36} \]
Therefore, the probability that Leah rolls a 6 two times in a row is:
\[ \frac{1}{36} \]
So the correct response is:
Start Fraction 1 over 36 End Fraction.