In-Depth Tutorial
A formal, accessible 800–1000 word walkthrough of this topic, written for the serious aspirant. Switch to हिन्दी using the toggle on the right.
Why Blood Relations and Direction Sense Are Tested Together
Blood relations and direction sense are tested in almost every government examination because both topics measure a candidate's ability to handle multi-step information without losing track of detail. A blood relation problem demands that the candidate convert a long sentence describing kinship into a clean family tree on paper. A direction sense problem demands that the candidate convert a sequence of movements into a coordinate diagram. Both skills mirror real administrative tasks — interpreting a witness statement, tracing the movement of a file, or mapping a route — which is why recruitment bodies persist with these question types year after year.
Together, blood relations, direction sense, clocks and calendars contribute six to ten marks in every reasoning section. The candidate who masters them gains a stable, almost mechanical scoring base that requires no creativity in the examination hall — only the calm, faithful application of well-rehearsed diagrams.
Building a Family Tree from a Statement
The professional method for blood relation questions begins with a fixed convention. The candidate should always represent males with a square or a plus sign and females with a circle or a minus sign. Marriage is shown by a horizontal line between two symbols. Parenthood is shown by a vertical line dropping down to children. Sibling relationships are shown by a horizontal line connecting children of the same parent. Once these conventions are followed without deviation across every practice question, the diagrams become readable in a single glance under examination pressure.
The second discipline is to draw the diagram in the order in which the sentence introduces information, not in the order in which the candidate wishes the family to look. If the sentence first introduces a man, then his sister, then his sister's son, the diagram should be built in that exact sequence. Reordering tempts the candidate to skip a relationship and produce a tree with a missing branch.
Pointing Statements and Generation Counting
A common pattern in examinations is the pointing statement: 'Pointing to a photograph, a man said — She is the only daughter of the only son of my grandfather.' The candidate must identify the relationship between the speaker and the photograph. The reliable method is to read the statement from the innermost descriptor outward. The grandfather's only son is the speaker's father; the only daughter of the speaker's father is the speaker's sister. A clean pencil tree built in this inside-out order solves these questions in under thirty seconds without ambiguity.
Generation counting is the second professional check. The speaker, his siblings and his cousins are at one generation; his parents, uncles and aunts are at the generation above; his children, nephews and nieces are at the generation below. If a candidate's answer accidentally crosses two generations — for example, calling someone both a sister and a daughter — the answer is wrong, and the diagram must be re-drawn.
Direction Sense — From Sentence to Coordinate Diagram
A direction sense question describes a sequence of movements such as 'A walks 5 km north, then 3 km east, then 4 km south, then 6 km west — find the shortest distance and final direction from the starting point.' The professional method is to draw a small compass at the top of the rough sheet at the start of the paper, then plot every movement as an arrow on a coordinate grid. North-south movements add or cancel along the vertical axis; east-west movements add or cancel along the horizontal axis. The shortest distance from start to end is then computed using the Pythagorean theorem on the net displacements.
Two specific traps must be remembered. First, a left turn or a right turn is relative to the direction the person was already facing — not to the original north. The candidate should mentally rotate to face the previous direction before applying the new turn. Second, in shadow-based problems, the shadow of an object falls in the opposite direction to the sun. In the early morning the sun is in the east, so shadows fall to the west; in the late afternoon the sun is in the west, so shadows fall to the east. Memorising this single fact converts every shadow question into a routine direction-arithmetic problem.
Clocks and Calendars — The Quiet Score-Booster
Clock questions exploit the fact that the hour hand moves 0.5 degrees per minute while the minute hand moves 6 degrees per minute. The angle between the two hands at any time h hours and m minutes is given by the formula |30h − 5.5m|. Two facts then unlock every clock question in the syllabus: the hands coincide eleven times in twelve hours, and they form a right angle twenty-two times in twelve hours.
Calendar questions rely on the concept of an odd day — the remainder when the number of days in a period is divided by seven. An ordinary year has one odd day; a leap year has two. With this single rule, the day of the week corresponding to any past or future date can be determined in under a minute. Together, clocks and calendars contribute two to four certain marks per paper for the candidate who has invested even one focused study session in these short, formula-driven sub-topics.
A Three-Week Practice Plan
An efficient preparation plan dedicates the first week to drawing fifty family trees from sentence-form blood-relation statements, focusing on accuracy rather than speed. The second week shifts to direction sense, with twenty-five movement sequences and ten shadow-based questions solved on coordinate grids. The third week consolidates by attempting two full mixed sets per day — fifteen blood relations, ten direction sense, and five clock-and-calendar questions in a thirty-minute window.
By the end of this plan, the candidate can expect ninety-percent accuracy across the entire blood relations and direction sense band, contributing six to eight reliable marks in every examination. These are marks earned not by brilliance but by discipline — and discipline is the single most predictable performance factor in any government recruitment paper.