About this test
An original Doubtly topic test on Coding-decoding for SSC CGL, SSC CHSL, SSC MTS, RRB NTPC/Group D and bank (IBPS/SBI PO and Clerk) reasoning sections. All 25 questions are written by Doubtly in the 2026 exam style; this is not an official or memory-based paper. Questions go from easy to hard (8 easy, 12 medium, 5 hard).
Pattern
| Section | Questions | Marks | Time | Negative marking |
|---|---|---|---|---|
| Reasoning: Coding-decoding | 25 | 25 | 20 minutes | 0.25 per wrong answer |
How to use it
Take it in one sitting with the timer on. That is under a minute a question, so skip anything that is taking too long and come back to it. After submitting, read every solution: each one sets out the logic step by step. For letter codes, write the alphabet positions of the word and its code one below the other and look at the differences; also check for reversal and opposite letters (A↔Z). For sentence codes, find the word common to two sentences and the code common to the same two.
FAQs
Is there negative marking?
Yes. Each correct answer gets 1 mark and each wrong answer loses 0.25 marks, as in SSC CGL Tier 1. Unattempted questions score zero.
What level are the questions?
The first questions are at SSC MTS/RRB Group D level; the last ones match the harder questions in SSC CGL and bank prelims.
Can I retake the test?
Yes. Retake it after revising the methods in the solutions and compare your score and time.