Math, asked by nathanj1103, 9 months ago

At a high school, students can choose between three art electives, four history electives, and five computer electives. Each student can choose two electives.

Which expression represents the probability that a student chooses an art elective and a history elective?

A). StartFraction 7 C 2 Over 12 C 2 EndFraction
B). StartFraction 7 P 2 Over 12 P 2 EndFraction
C). StartFraction (3 C 1) (4 C 1) Over 12 C 2 EndFraction
D). StartFraction (3 P 1) (4 P 1) Over 12 P 2 EndFraction

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Answers

Answered by amitnrw
19

Given : At a high school, students can choose between three art electives, four history electives, and five computer electives. Each student can choose two electives.

To find : probability that a student chooses an art elective and a history elective

Step-by-step explanation:

Art electives  = 3

History electives  = 4

Computer Electives = 5

Total Electives = 3  + 4 + 5  = 12

Each student can choose two electives.

Two electives our of 12 can be selected  in  ¹²C₂  ways

a student chooses an art elective and a history elective

= ³C₁ * ⁴C₁

probability that a student chooses an art elective and a history elective  

= (³C₁ * ⁴C₁ ) / ¹²C₂

option C is correct

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Answered by Justin01
12

Step-by-step explanation:

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