The worked question on this page is original educational practice. It is not represented as a question from an official previous-year examination paper.
01 / UNDERSTANDING
Review the question
Write original series with an explicitly stated pattern family at first. Gradually remove that support and compare whether the learner still verifies every transition before choosing an answer.
02 / UNDERSTANDING
The concept in context
Finite terms do not mathematically force one unique continuation without restrictions. In exam-style practice, prefer a coherent economical rule consistent with all terms and the available choices. Record why the rule fits rather than claiming that every imaginable alternative is impossible. This distinction improves both pattern search and honest solution explanations.
03 / UNDERSTANDING
A worked learning case
Original educational case. For the original series 4, 7, 12, 19, the differences are 3, 5 and 7. Continuing consecutive odd differences suggests adding 9, giving 28. The explanation checks the entire visible pattern. A rule invented only to move from 12 to 19 would not establish why the earlier terms belong to the same series.
ORIGINAL EDUCATIONAL PRACTICE
Try it before you check.
Original practice: Using consecutive odd increments, complete 2, 5, 10, 17, __.
Show the answer and reasoning
26.
The increments are 3, 5 and 7, so the stated consecutive-odd pattern continues with 9. Adding 9 to 17 gives 26. The condition in the prompt identifies the intended rule; without such a restriction, a finite series can have other constructed continuations, so the explanation should state the pattern being used.
Two traps to watch for.
- Selecting a rule that fails an earlier transition.
- Treating a finite sequence’s intended pattern as logically unique.
YOUR TOPIC-SPECIFIC LEARNING MAP
Learn from the attempt
Write all consecutive differences.
Test alternate positions if differences fail.
Verify the proposed rule from the first term.
Explain the idea, apply it to a new situation, then check what changed in your reasoning.
BANKERS TUTORIAL · SOURCE NOTES
Keep the source alongside your notes.
Official links provide subject context and authoritative reference material. This guide’s explanation, scenario and question are original Bankers Tutorial learning content.
- sbi.bank.in https://sbi.bank.in/web/careers/current-openings
- sbi.bank.in https://sbi.bank.in/webfiles/uploads/files_2627/09/SBI_JA-Customer_Support_Sales-IH_Pre-2026-27_Eng.pdf
For SBI preparation, check the current official notice before relying on changing dates, rules or examination requirements.
