A truck was facing the south. It turned 135 degree in the clockwise direction and then 45 degree in the anti-clockwise direction then moved 5km Then moved 45 degree in the anti-clockwise. In which direction is the truck facing now?

1. A

   South-west

2. B

   South

3. C

   North

4. D

   South-east

Appeared in: RRB Nsg. Superintendent-2026 (Shift -2nd)

Explanation

• The problem requires calculating the net rotation of a truck from its initial direction.
• The initial direction is South.
• The total clockwise rotation is 135°.
• The total anti-clockwise rotation is the sum of two separate turns: 45° + 45° = 90°.
• The net rotation is 135° (clockwise) - 90° (anti-clockwise) = 45° clockwise.
• A 45° clockwise turn from South results in the truck facing the South-west direction.

Why Other Options Were Wrong

• Option B: The truck would be facing South only if the net rotation was 0° or 360°, meaning the clockwise and anti-clockwise turns cancelled each other out completely. Here, there is a net 45° clockwise turn.
• Option C: For the truck to face North, it would need to make a net turn of 180° from its starting position of South. The calculated net turn is only 45° clockwise.
• Option D: To face South-east, the truck would need to make a net turn of 45° in the anti-clockwise direction from South. The calculation shows a net turn of 45° in the clockwise direction.

Related Visual

• Visual 1: Diagram: A compass rose showing the cardinal (North, South, East, West) and intercardinal (North-East, South-West, etc.) directions with degree markings. Arrows can illustrate the sequence of turns: starting at South, moving 135° clockwise to North-West, then back 90° anti-clockwise to land on South-West.

Clinical Relevance

• Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain This question tests logical reasoning and the ability to solve problems related to directions and rotations as background academic context rather than a clinical decision trigger.
• What if? - If the stem changed one defining clue so that South-west no longer matched, reassess the option whose mechanism, classification, or indication now fits the revised presentation.

How to Approach the Question

• First, identify the initial direction of the object, which is South.
• Sum all the clockwise rotations. In this case, it's just one turn of 135°.
• Sum all the anti-clockwise rotations. Here, there are two turns: 45° + 45° = 90°.
• Calculate the net rotation by subtracting the smaller total from the larger total, and keep the direction of the larger turn. Net turn = 135° (Clockwise) - 90° (Anti-clockwise) = 45° Clockwise.
• Apply the net rotation to the initial direction. A 45° clockwise turn from South points to South-west.
• Note that any distance moved in a straight line does not change the facing direction, so the '5 km' detail is irrelevant to the final direction.

Concept Tested & Keywords

• Concept Tested: This question tests logical reasoning and the ability to solve problems related to directions and rotations.
• Stem keywords: truck, facing south, turned 135° clockwise, 45° anti-clockwise
• Lead-in keywords: In which direction is the truck facing now?

Question ID

QHI0K_dLWpkl44vNIruQM

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