Final answer:
The probability of randomly picking a white card from a bag containing all red cards is 0.
Step-by-step explanation:
Given that the bag contains all red cards, the probability of randomly picking a white card from the bag is 0, since there are no white cards in the bag. The probability is determined by the ratio of the number of favorable outcomes (picking a white card) to the total number of possible outcomes (picking any card from the bag). In this case, the total number of possible outcomes is 0, so the probability is 0.