SSC CGL 2024 Tier-I · 24 September 2024, Shift 3 · General Intelligence and Reasoning · Question 1 of 99

Text as printed on a candidate's response sheet for this shift; answer per SSC's tentative key as marked on that sheet. Solution last reviewed 10 September 2026.

Where this paper and its answers come from

SSC does not publish CGL question papers or a public answer key. The questions and options here are reproduced as printed on a candidate's own response sheet for this shift — the Commission's text, unchanged. Each answer is SSC's tentative key as marked on that sheet; SSC allowed challenges to it and never publishes a final key. The solutions are written by UnlockIAS.

Select the correct mirror image of the given figure when the mirror is placed at MN.

Answer

Why

Correct — C. The mirror MN is a vertical line, so the reflection reverses left and right and leaves top and bottom exactly as they are.

Original: K f 5 9 B a r
Image, read left to right: r a B 9 5 f K, with every glyph itself turned back-to-front.

Option (c) is the strip in which all seven characters are reversed and none has been turned over instead. Its f still hooks from the top of the stem, and its B carries both bowls on the left.

Why the others are wrong

(a)
Two characters are wrong. The f is turned through 180 degrees — its hook sits at the bottom of the stem — and the B is not reflected at all, its spine still on the left as in option (d).
(b)
The 9 comes out as a 6 — the digit rotated, not reflected — and the a keeps its stem on the right, so it has not been reversed either. Rotation is not a mirror.
(d)
The B stands the right way round, bowls still opening rightwards. B is not symmetric about a vertical axis, so a reflection has to reverse it.

Concept

A mirror standing on a vertical line swaps left and right and leaves top and bottom alone.

Two things happen together. The order of the characters reverses, so the last character of the string becomes the first character of the image. And each individual glyph is flipped left to right, so K opens leftwards and 5 and 9 face the other way.

Characters symmetric about a vertical axis — A, H, M, O, T, U, V, W, X, Y, 0, 8 — look identical in such a mirror, so they decide nothing and are worth skipping over.

The four options are near-identical strips, so scanning one as a whole will not separate it from its neighbours. Compare character by character against the reversed order.

Key facts

A mirror on a vertical line reverses left and right and leaves top and bottom unchanged.
Kf59Bar reflects to a strip reading r a B 9 5 f K, every glyph flipped.
Turning a character upside down is a rotation, not a reflection, and cannot appear in a vertical mirror image.
Glyphs symmetric about a vertical axis, such as A, H, M, O, T, U, V, W, X, Y, 0 and 8, are unchanged by this mirror.

Study next

Water images, where the mirror line is horizontal and top and bottom swapMirror images with an oblique mirror line, and mirrored clock facesWhich capital letters and digits are symmetric about a vertical axis

Common traps

Reversing the order of the characters but forgetting to flip each glyph
Accepting a strip where one character has been rotated 180 degrees instead of reflected
Judging the strip at a glance rather than checking each character in turn

SSC prints this stem with a drawn MN line beside the figure. The same wording is used at 09 Sep 2024, 12:30, Reasoning Q.2 and Q.3, and at 10 Sep 2024, 09:00, Reasoning Q.2.

Related PYQs

No directly related past PYQ was found.