GMAT Problem Solving

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Source: OG11th

Level: 4

Right triangle PQR is to be constructed in the xy-plane so that the right angle is at P and is parallel to the x-axis. The x- and y-coordinates of P, Q, and R are to be integers that satisfy the inequalities -4 ≤ x ≤ 5 and 6 ≤ y ≤ 16. How many different triangles with these properties could be constructed?

  • A 110
  • B 1100
  • C 9900
  • D 10000
  • E 12100

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