Let S = {s1, s2, s3, s4, s5, s6} be the sample space associated with an experiment having the following probability distribution: 
Find the probability of the event A = {s1, s3}.
Definitions:
Intelligence Test
An intelligence test is a psychological assessment tool designed to measure one's intellectual capabilities, such as problem-solving skills, reasoning ability, and understanding complex concepts.
Adult Income
Typically refers to the earnings received by an individual after reaching adulthood, influencing socioeconomic status and quality of life.
Verbal Fluency
The ability to produce words rapidly and fluidly in conversation or a formal language task.
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Questions or exercises involving mathematical concepts and computational procedures that require solving.
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