SSC CGL 2025 Tier 1 Reasoning PYQ – 26 Sep 2025 Shift 2 (24 Questions with Solutions)

SSC CGL 2025 Tier 1 Reasoning PYQ 26 Sep Shift 2: Coding, Series and More

SSC CGL 2025 Tier 1 Reasoning from 26 September 2025, Shift 2 is the General Intelligence and Reasoning section of the actual paper. It mixes coding-decoding, number and letter series, analogies, a syllogism and a few arithmetic-style puzzles. Aptitude360 provides worked solutions for most questions.

What the SSC CGL 26 Sep Shift 2 Reasoning paper tests

• Letter-shift coding and decoding
• Number series: missing term, wrong term, prime sequences and division patterns
• Letter-pair series built on forward and backward alphabet positions
• Number analogies based on squares and cubes
• Syllogism with 'some' and 'all' statements
• Address matching, odd one out among cities, anagrams and digit arrangement
• Arithmetic puzzles on remainders, boats and streams and the diagonal of a rectangle

Key formulas and rules for these Reasoning questions

• Speed of stream (D downstream, U upstream): \( \dfrac{D-U}{2} \)
• Speed of boat in still water: \( \dfrac{D+U}{2} \)
• Speed from distance and duration: \( s=\dfrac{d}{t} \)
• Diagonal of a rectangle: \( d=\sqrt{l^{2}+b^{2}} \)
• Cube analogy pattern: \( n \to n^{3} \)

Preparation tips for SSC CGL Reasoning

• Memorise alphabet positions both forward and backward so letter coding becomes simple addition
• For a wrong-number series, test doubling, adding and alternating patterns before trying anything complex
• Use the digit-sum rule for remainders on division by nine instead of long division
• Draw quick Venn diagrams for syllogisms instead of judging conclusions by wording

Who this Reasoning PYQ suits

It suits SSC CGL candidates who know the standard reasoning question types and want practice on a genuine Tier 1 shift.