Questions
3 questions per paper
Difficulty
Medium
Importance
High yield for SSC and banking exams
Overview
Direction and Blood Relations are foundational reasoning topics that test spatial visualization and logical deduction. Mastering these allows for quick, non-calculated scoring in exams like SSC and banking, which is critical for managing your overall paper timer.
Direction Sense Basics
Direction problems involve tracking movement on a 2D plane based on cardinal and ordinal directions. Success relies on maintaining a consistent fixed-axis diagram and tracking relative movement from the origin.
- Use standard coordinate axes: North (up), South (down), East (right), West (left)
- Pythagoras Theorem: Hypotenuse = square root of (Base^2 + Height^2)
- Turning 90 degrees left or right changes direction by one quadrant
- Total distance vs. displacement calculation
- Shadow problems: Remember the Sun rises in the East and sets in the West
Family Tree Construction
Blood Relation problems require representing multi-generational families using a clear notation system to avoid confusion between names and genders. Standardizing your symbols for marriage, siblings, and parent-child hierarchy is the fastest way to solve.
- Male representation: Square symbol (+)
- Female representation: Circle symbol (-)
- Marriage: Double-headed arrow between two individuals
- Siblings: Single horizontal line
- Generations: Vertical hierarchy (top to bottom)
Coded Blood Relations
This advanced format uses symbols or operators to define relationships (e.g., A + B means A is father of B). The best approach is to decode symbols one-by-one and evaluate the options using gender elimination.
- Read the equation from left-to-right to save time
- Use gender-based elimination to rule out options immediately
- Focus on the final relationship asked in the expression
- Watch for reverse relationships like 'A is father of B' vs 'A is the son of B'
Formula Sheet
Pythagoras Theorem: c^2 = a^2 + b^2
Direction Grid: N-E-S-W clockwise rotation
Exam Tip
Always use gender-elimination first to narrow down multiple-choice options, as it is significantly faster than drawing the full tree for every single option.
Common Mistakes
- Assuming the direction of a person is their own perspective rather than a fixed grid perspective
- Ignoring the specific gender constraints in coded relations leading to incorrect 'Gender-Sex' assumptions
- Over-drawing the family tree, which consumes excessive time in a 60-minute exam format
More Revision Notes
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