In each of the following questions, a group of three numbers/symbols is given in each option. Identify the group that does NOT fo…

General Intelligence & Reasoning ·Previously asked in SSC CGL 2025

View the full solved paper: SSC CGL 2025 Tier I - 13 Sep 2025, Shift 2 (13 Sep 2025, Shift 2)

Question

In each of the following questions, a group of three numbers/symbols is given in each option. Identify the group that does NOT follow the same pattern as the others.

  1. A. M13 : J10 : G7
  2. B. Z26 : W23 : T20
  3. C. D4 : A1 : X24
  4. D. H8 : E6 : B4 (Correct answer)

Correct Answer

Option D — H8 : E6 : B4

Detailed Solution & Explanation

The correct answer is H8 : E6 : B4.

Key Points

  • In each group the number should equal the letter's alphabetical position, and both should fall by 3 at each step:
    • M13 : J10 : G7 — positions 13, 10, 7 ✓
    • Z26 : W23 : T20 — positions 26, 23, 20 ✓
    • D4 : A1 : X24 — positions 4, 1, then wrapping back to 24 ✓
  • In H8 : E6 : B4 the letters do fall by 3 (H, E, B), but the numbers do not match their positions: E is 5, not 6, and B is 2, not 4.
  • The letter-number correspondence breaks, so this group is the odd one.

Additional Information

  • Two independent strands are running here — the letter sequence and the number sequence — and the rule requires them to agree. Test each strand separately, then test their relationship.
  • The third group wraps from A(1) back to X(24), which looks irregular but is consistent once the alphabet is treated as circular.
  • The odd group is deliberately built to satisfy part of the rule: its letters step correctly by 3, which is enough to pass a hurried check.

प्रश्न (हिन्दी में)

निम्नलिखित प्रत्येक प्रश्न में, प्रत्येक विकल्प में तीन संख्याओं/प्रतीकों का एक समूह दिया गया है। उस समूह की पहचान कीजिए जो अन्य के समान स्वरूप का पालन नहीं करता है।

  1. A. M13 : J10 : G7
  2. B. Z26 : W23 : T20
  3. C. D4 : A1 : X24
  4. D. H8 : E6 : B4

Topics covered: Odd One Out Letter-Number Coding