Before revision: This was an extremely unlikely occurrence: the probability of a sequence of either red or black occurring 26 times in a row is or around 1 in 66.6 million, assuming the mechanism is unbiased.
After revision: This was an extremely unlikely occurrence: the probability of a sequence of either red or black occurring 26 times in a row is or around 1 in 68.4 million, assuming the mechanism is unbiased.