{"id":168252,"date":"2025-08-19T18:47:34","date_gmt":"2025-08-19T13:17:34","guid":{"rendered":"https:\/\/www.practicemock.com\/blog\/?p=168252"},"modified":"2025-08-21T18:37:30","modified_gmt":"2025-08-21T13:07:30","slug":"master-machine-input-output-for-rbi-grade-b-exam","status":"publish","type":"post","link":"https:\/\/www.practicemock.com\/blog\/master-machine-input-output-for-rbi-grade-b-exam\/","title":{"rendered":"Master Machine Input Output for RBI Grade B Exam"},"content":{"rendered":"\n

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Home<\/a><\/span> \u00bb RBI Grade B<\/a><\/span> \u00bb Machine Input Output<\/span><\/span><\/div>\n\n\n

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Machine Input Output is one of the high-scoring parts of the reasoning section in RBI Grade B Phase 1. Based on past years\u2019 analysis, candidates usually face 3 to 5 questions from this topic. That\u2019s around 5 to 10 marks in the reasoning paper. While the number may look small, these marks often become the deciding factor when cut-offs are close. The good part is that these questions are of moderate difficulty, and once you understand the pattern, they can be solved faster than puzzles. In this blog, we will cover the common patterns, a clear approach to solve them, exam-level examples, and smart practice strategies so you can secure these marks easily.<\/p>\n\n\n\n

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Attempt a Free RBI Grade B Free Mock Test To Know Your AIR<\/strong><\/a><\/div>\n<\/div>\n\n\n\n

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ALSO READ: How to Score Maximum Marks in Cloze Test<\/a><\/strong><\/p>\n\n\n\n

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What Are Machine Input Output Questions<\/strong><\/h2>\n\n\n\n

In this type, you are given a set of words, numbers, or a mix of both, arranged in a random sequence. Then, a machine performs operations on this input step by step, and you are shown some intermediate steps. Your task is to identify the exact logic behind the rearrangement and apply it to answer the questions.<\/p>\n\n\n\n

Most of the time, 1 input and 4 to 5 steps are shown. Then, 4 to 5 questions are asked, where you need to find the next step, find the order, or count the number of steps. In RBI Grade B Phase 1, this is almost a regular topic. The challenge lies in detecting the logic quickly.<\/p>\n\n\n\n

ALSO READ:<\/strong> How to Score Maximum Marks in Blood Relations and Coding-Decoding<\/p>\n\n\n\n

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Common Patterns You Must Know<\/h2>\n\n\n\n

Here is the pattern for RBI Grade B Machine Input Output questions:<\/p>\n\n\n\n

1. Arrangement of words in the order of the dictionary, like A to Z or Z to A.<\/strong><\/p>\n\n\n\n

Example: It won\u2019t be asked directly. Instead, it could be a complex variation. You may have to arrange words in ascending order on the basis of the 2nd letter<\/strong> or the 2nd last letter<\/strong> of each word. For example, words like cat, bat, mat, rat<\/em> may need to be arranged as bat, cat, rat, mat<\/em> depending on the position rule.<\/p>\n\n\n\n

2. Arrangement of numbers in either ascending or descending order.<\/strong><\/p>\n\n\n\n

Example: For numbers, there will often be an operation first<\/strong> and then arrangement. For instance, you may be given numbers, say, 28, 46, 93, 52<\/em>. The step may say: \u201cTake the sum of the digits<\/strong> of each number and then arrange them in ascending order.\u201d <\/p>\n\n\n\n

So it becomes 93 (12), 46 (10), 52 (7), 28 (10),<\/em> and then sorted accordingly.<\/p>\n\n\n\n

3. Even numbers shifted left, or odd numbers shifted right.<\/strong><\/p>\n\n\n\n

Example: It won\u2019t be a simple move. A question might say: \u201cShift all odd numbers divisible by 3<\/strong> to the right, while keeping the rest in their original sequence.\u201d <\/p>\n\n\n\n

For instance, with 15, 28, 33, 46, 52<\/em>, the rearrangement would put 15, 33<\/em> at the far right, and the rest remain in order.<\/p>\n\n\n\n

4. Smallest number first, then largest number, then second smallest, and so on.<\/strong><\/p>\n\n\n\n

Example: A complex version could ask: \u201cArrange the numbers alternately as per smallest and largest, but only after replacing each number with the product of its digits<\/strong>.\u201d If numbers are 23, 45, 82<\/em>, they become 6 (2\u00d73), 20 (4\u00d75), 16 (8\u00d72)<\/em>. <\/p>\n\n\n\n

Then arrange as 6, 20, 16<\/em> in the alternate smallest\u2013largest sequence.<\/p>\n\n\n\n

5. Letters moved based on alphabetical position.<\/strong><\/p>\n\n\n\n

Example: It might not just be direct shifting. A question could say: \u201cReplace every word with the alphabetical position of its last letter<\/strong>, and then rearrange them.\u201d <\/p>\n\n\n\n

For example, cat (t=20), dog (g=7), bat (t=20)<\/em>. After conversion: 20, 7, 20<\/em> \u2192 rearranged in ascending order \u2192 7, 20, 20<\/em>.<\/p>\n\n\n\n

These questions look simple, but they aren’t. Under exam pressure, spotting the hidden operation<\/strong> and then applying the rule correctly may be a challenging if you haven’t practiced it well. <\/p>\n\n\n\n

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ALSO READ: How to Score Maximum Marks in Cloze Test<\/a> & Ratio & Proportion Concepts and Shortcuts for RBI Grade B Exam<\/a><\/strong><\/p>\n\n\n\n

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How to Solve Machine Input Output Step by Step<\/strong><\/h2>\n\n\n\n

Here is the safe approach you should always follow:<\/p>\n\n\n\n

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  1. Read the input carefully.<\/strong> Check if it has words, numbers, or a mix.<\/li>\n\n\n\n
  2. Look at the first step.<\/strong> See what change has happened compared to the input.<\/li>\n\n\n\n
  3. Check the next step.<\/strong> Confirm if the same type of change is happening.<\/li>\n\n\n\n
  4. Find the pattern.<\/strong> Is it arranging numbers, shifting letters, or alternating?<\/li>\n\n\n\n
  5. Apply the pattern logically.<\/strong> Work step by step without leaving.<\/li>\n<\/ol>\n\n\n\n

    You just need to find the pattern, and the rest of the questions become easy.<\/p>\n\n\n\n

    Example 1<\/strong><\/h2>\n\n\n\n

    Input: 52 19 84 37 61<\/strong>
    <\/strong>Step 1: 19 52 84 37 61<\/strong>
    <\/strong>Step 2: 19 37 52 84 61<\/strong>
    <\/strong>Step 3: 19 37 52 61 84<\/strong><\/p>\n\n\n\n

    Pattern: Numbers are arranged in ascending order, one at a time.<\/strong><\/p>\n\n\n\n

    Answerable Questions: What will be Step 2? What is the last number in Step 3? How many steps are required to complete?<\/strong><\/p>\n\n\n\n

    Example 2<\/strong><\/h2>\n\n\n\n

    Input:<\/strong> car dog apple zebra kite
    Step 1:<\/strong> apple car dog zebra kite
    Step 2:<\/strong> apple car dog kite zebra<\/p>\n\n\n\n

    Pattern: Words are placed in dictionary order, one word at a time.<\/strong><\/p>\n\n\n\n

    Never Fall into Common Traps <\/strong><\/h2>\n\n\n\n

    Here\u2019s what you need to keep in mind while solving a question:<\/p>\n\n\n\n