Non-Verbal Reasoning Questions for SSC GD

Mirror Image

A mirror image is what you see when a figure is placed in front of a vertical mirror. The left and right sides flip, but top and bottom stay the same. Think of it like waving your right hand in front of a mirror — the reflection raises its left hand. For letters and numbers, only horizontal flip matters for a vertical mirror.

• Vertical mirror: Left becomes Right, Top and Bottom stay same
• Horizontal mirror (water image): Top becomes Bottom, Left and Right stay same
• For clocks: if original shows 3:00, mirror image shows 9:00 — use formula 11:60 minus original time
• Letters that look same in mirror: A, H, I, M, O, T, U, V, W, X, Y
• Numbers that look same in mirror: 0, 1, 8
• Always check the direction of asymmetric parts like arrows or tails of letters

Water Image

Water image is the reflection when a figure is placed above a horizontal surface like water. The top flips to bottom. Imagine holding a paper and dipping it face-down in water — the image you see from below is the water image. Unlike mirror images, left and right are unchanged.

• Top becomes Bottom, Left and Right stay the same
• Water image is always upside down compared to original
• For clocks: Water image formula = 17 hours 60 minutes minus original time
• Letters that look same in water image: B, C, D, E, K
• Do not confuse water image with mirror image — a common exam trap
• Water image + Mirror image together = 180 degree rotation of original

Figure Series and Analogy

In figure series, a set of shapes changes in a pattern and you have to find the next figure. Changes can be in rotation, size, shading, number of sides, or position of elements. In figure analogy, two figures share a relationship and you apply the same relationship to a third figure to find the fourth.

• Look for changes in: rotation angle, shading pattern, number of elements, size
• Common rotation angles: 45, 90, 135, 180 degrees clockwise or anticlockwise
• If an element disappears in one step, it usually reappears two steps later
• In analogy questions, identify the exact transformation and apply it consistently
• Eliminate options by checking the easiest visible change first
• Arrow direction, dot position, and line style are frequent distinguishing clues

Paper Folding and Cutting

A square paper is folded once or twice and a hole is punched. You have to find how the paper looks when unfolded. The key idea is that every fold creates a mirror copy of the punch. So one fold gives 2 holes, two folds give 4 holes, all symmetric about fold lines.

• One fold means 2 holes when unfolded, two folds mean 4 holes
• Holes are always symmetric about the fold line
• Trace the fold line carefully — fold direction determines which side mirrors which
• In cutting questions, visualize the shape that opens up when paper unfolds
• Practice by actually folding a paper once — this builds lasting visual memory
• SSC GD usually tests single fold, rarely double fold

Counting Figures (Triangles, Squares, Rectangles)

A complex figure is drawn and you are asked how many triangles or squares are hidden inside it. The trick is to count systematically: first count the smallest units, then combinations of 2 units, then 3 units, and so on. Using a formula saves time.

• For a triangle divided by n lines from one vertex: total triangles = n(n+2)(2n+1) divided by 8 — only for specific standard figures
• Count in order: single, double, triple combinations — do not skip
• Mark each figure as you count to avoid double counting
• For squares in an n by n grid: total squares = sum of squares from 1 to n = n(n+1)(2n+1) divided by 6
• Rectangles in an n by m grid: total = nC2 times mC2
• Triangles inside a triangle with n divisions per side: use n(n+2)(2n+1) divided by 8

Embedded Figures and Figure Completion

In embedded figures, a small shape is hidden inside a larger complex figure and you must identify which option contains the small shape. In figure completion, one part of a figure is missing and you choose which piece fits correctly to complete it.

• Rotate the small figure mentally — it can appear in any orientation inside the larger figure
• Trace the outline of the small figure over the large figure segment by segment
• In completion questions, check edges and corners for exact matching
• The correct piece must match in size, angle, and direction
• Eliminate options that have extra lines or wrong shading
• Spend max 30 seconds per question — move on if stuck

• Confusing mirror image with water image — mirror flips left-right, water flips top-bottom. Many students mix these up under time pressure.
• Using the mirror clock formula for water image or vice versa — remember Mirror uses 11:60 and Water uses 17:60.
• In paper folding, forgetting that a fold on the right means the hole mirrors to the left side, not the same side.
• In counting figures, counting only the smallest units and missing the larger combinations — always count in layers.
• In figure series, focusing only on shape and ignoring shading or dot position, which is often where the real pattern hides.

• Mirror vs Water: M comes before W in alphabet, Mirror = Left-Right flip (horizontal change), Water = Up-Down flip (vertical change). M for side, W for wave below.
• Clock mirror trick: ELEVEN SIXTY minus time. Clock water trick: SEVENTEEN SIXTY minus time. 11 for mirror, 17 for water — 17 is bigger like water is deeper.
• Paper fold rule: FOLD ONCE = DOUBLE HOLES, FOLD TWICE = FOUR HOLES. Think of it as folding a bedsheet — each fold doubles the layers.
• Counting triangles mnemonic: SMALL then MEDIUM then LARGE — always go S-M-L like a T-shirt size order.

• SSC GD typically asks 4 to 6 non-verbal questions in Reasoning. Mirror image and figure series are the most repeated — practice these first for maximum return.
• Mirror and water image questions are straightforward and take under 30 seconds each if formula is memorized. Do not spend more time than this.
• Paper folding questions are slightly tricky — if you cannot visualize within 30 seconds, mark and return. Do not let one question eat 2 minutes.
• Counting figures questions appear once per paper usually. Use the formula directly for standard grids — do not count manually under exam pressure.
• In recent SSC GD papers, embedded figures and figure completion have increased slightly. Practice spotting shapes at different orientations as a daily drill for 5 minutes.