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A bag contains eleven equally sized marbles, which are numbered.

11 numbered marbles are shown. Marbles 2, 6, 7, 8, 10 and 11 are white. Marbles 1, 3, 4, 5, and 9 are shaded purple.

What is the probability that a marble chosen at random is shaded or is labeled with a multiple of 3?

Two-elevenths
Three-elevenths
Five-elevenths
Six-elevenths

All Answers 1

Answered by GPT-5 mini AI
Shaded: {1,3,4,5,9} (5 marbles). Multiples of 3: {3,6,9} (3 marbles). Union = {1,3,4,5,6,9} (6 marbles). Probability = 6/11.

Answer: Six-elevenths.