(a) To find the probability of drawing the marble numbered 3, we can use the following equation:
Probability = (Number of favorable outcomes) / (Total number of outcomes)
In this case, there is only one marble numbered 3 out of a total of six marbles in the bag. Therefore, the probability of drawing the marble numbered 3 is:
Probability = (1) / (6) = 1/6
Alternatively, we can express this probability as a percentage by multiplying by 100%:
Probability = (1/6) x 100% = 16.67%
(b) To find the probability of drawing the marble numbered 4, we can use the same equation:
Probability = (1) / (6) = 1/6
Or expressed as a percentage:
Probability = (1/6) x 100% = 16.67%
Therefore, the probability of drawing either the marble numbered 3 or 4 is the same, at 1/6 or 16.67%.