Mathematics: Quick recap(questions)

  • The minimum value of function y = x2 in the interval [1, 5] is
          (A) 0 (B) 1

          (C) 25 (D) undefined

  • The vector field is F = xi - yj (where i and j are unit vector) is
      (A) divergence free, but not irrotational
      (B) irrotational, but not divergence free
      (C) divergence free and irrotational
      (D) neither divergence free nor irrational

  • From a pack of regular playing cards, two cards are drawn at random. What is the probability that both cards will be Kings, if first card in NOT replaced ?
          (A) 1/26
          (B) 1/52
          (D) 1/221


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