ISRO Computer Science (CSE) 2007 - Question 32

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Identify the correct translation into logical notation of the following assertion. "Some boys in the class are taller than all the girls"

  • A. (Ex) (boy(x) -> (Vy) (girl(y) ^ taller(x,y)))
  • B. (Ex) (boy(x) ^ (Vy) (girl(y) ^ taller(x,y)))
  • C. (Ex) (boy(x) -> (Vy) (girl(y) -> taller(x,y)))
  • D. (Ex) (boy(x) ^ (Vy) (girl(y) -> taller(x,y)))

Answer: D. (Ex) (boy(x) ^ (Vy) (girl(y) -> taller(x,y)))

Explanation: There exists an x such that x is a boy AND for all y, if y is a girl, x is taller than y.

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