Q163 / 270 · NDA 2011 (Phase 1) · Mathematics

What is the number of ordered pairs of non-zero positive integers $(x, y)$ such that $x+y \leq 4$ ?

  • A
    4
  • B
    5
  • Correct answer
    C
    6
  • D
    8

Solution

The correct answer is option (C).

Hence, the correct answer is option: 'C'.

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