The probability of randomly selecting a marble and getting black or red is 3/7.
The probability exists simply how likely something is to occur.
Mutually exclusive events exist events that can't both occur but should not be considered independent events. Independent events include no influence on the viability of other options.
A probability event can be defined as a collection of outcomes of an experiment. In other phrases, an event in probability exists the subset of the respective sample space,
Given,
A bag includes 5 black marbles, 10 red marbles, and 20 blue marbles.
This exists as a mutually exclusive event because can't select both at the same turn you can only choose one or the other. So add the event chances together,
5/35 + 10/35 = 15/35 or reduced 3/7.
To learn more about probability refer to:
https://brainly.com/question/13604758
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