This is an independent topic guide, not the official syllabus. Compare it with the current paper outline and rules published by the examination authority.
01 / UNDERSTANDING
Learning objectives
Study left-right counts, token types, immediate neighbours and filtered positions. Learn to describe the counting rule in words before practising speed on longer mixed sequences.
02 / UNDERSTANDING
The concept in context
An alphanumeric series combines different token types in one sequence. First identify what the question calls a letter, digit or symbol, then apply positional conditions exactly. The third digit from the right refers to the order of qualifying digits, which may differ from the third token from the right in the complete sequence.
03 / UNDERSTANDING
A worked learning case
Original educational case. In the original sequence A 4 # B 7 C 2 %, the digits from the right are 2, 7 and 4. The second digit from the right is 7, while the second token from the right is 2. Deleting all symbols gives A 4 B 7 C 2, which has a new six-token position structure.
ORIGINAL EDUCATIONAL PRACTICE
Try it before you check.
Original practice: In M 8 @ N 3 P 6 &, which is the second digit from the right?
Show the answer and reasoning
3.
Ignore letters and symbols for the requested digit count. Reading qualifying digits from the right gives 6 first, 3 second and 8 third. Therefore the answer is 3. Counting all tokens would answer a different positional question, so filtering by token type must happen before assigning the requested rank.
Two traps to watch for.
- Counting all tokens when only digits are requested.
- Using original positions after deleting or rearranging tokens.
YOUR TOPIC-SPECIFIC LEARNING MAP
Your revision map
Mark the qualifying token type.
Write a filtered sequence if required.
Count from the specified end only.
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.
