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Difficulty: 2/102023 NMTC 2023 (QI-11)

The distance between the points (-2, 2) and (1, 6) is

Options:

  • A.

    25 units

  • 5 units

  • C.

    7 units

  • D.

    none of these

Guide / Hint

Hint 1: Recall the 2D distance formula: .

Hint 2: Substitute and into the formula.

Hint 3: Evaluate to find the distance, and match it to the correct option index.

Solution

Step 1 (Distance Formula): The distance between two points and is given by:

Step 2 (Substitute the Coordinates): We are given and . Substituting:

Step 3 (Conclusion): The distance is 5 units, which is option index 1 in the list ['25 units', '5 units', '7 units', 'none of these'].

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    2023 NMTC 2023 QI-11 - Olympiad Math Olympiad Question | Leminno