Final answer:
Drawing the blue 1 card from the deck corresponds to two events: B (drawing a blue card) and O (drawing an odd card).
Step-by-step explanation:
Drawing the blue 1 is an example of several events given the conditions of the card deck. Let's consider the events separately:
Event R (drawing a red card) does not occur since the card drawn is blue.
Event B (drawing a blue card) does occur because the card is indeed blue.
Event E (drawing an even-numbered card) does not occur because the number on the card is 1, which is odd.
Event O (drawing an odd card) does occur because 1 is an odd number.
Therefore, drawing the blue 1 card corresponds to the events B (blue card) and O (odd card).