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A student has 5 courses to take from Mathematics and physics. There are 4 courses…

A student has 5 courses to take from Mathematics and physics. There are 4 courses in Mathematics and 3 in Physics which he can choose his courses so that he takes exactly two courses in Physics?

  • A.
    48
  • B.
    12
  • C.
    10
  • D.
    7
Correct Answer: Option B
Explanation

Mathematics = (^{4} C_{3} = 4)

Physics = (^{3} C_{2} = 3)

(therefore) He can choose in 4 x 3 = 12 ways.

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