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1. The probability of marble chosen at random shaded or labeled with a multiple of 3 is 2/11.

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

   The total number of marbles present in the figure is 11.

   The shaded or labeled numbers are 5 (1,3,4,5 and 9).

   In these numbers, only 3 and 9 are the number that is multiple of 3. Thus, the total number of marble which shaded or is labeled with a multiple of 3 is two (3 and 9).

   Hence, the probability of marble chosen at random is shaded or is labeled with a multiple of 3 is,

   Thus, the probability of marble chosen at random shaded or labeled with a multiple of 3 is 2/11.

   The probability of an event is the ratio of a number of favorable outcomes to the total number of results of that event.

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