What is Input/Output For Reasoning?

One of the most scoring questions in any Banking exam is Input-Output. The questions based on Input-Output are being asked in almost all kind of Banking Examinations on a regular basis.

But for the sake of the Bank PO exams, it is important to concentrate on the questions that are mixes of words and numbers. Learning short tricks to handle these types of questions will significantly boost your reasoning score.

Solving Method for Input Output in Reasoning:

As mentioned above no matter how they give only these two type of changes they will follow in rearranging the pattern.

  1. Replacing both elements at a time.
  2. Changing the places

Ex:
Input: 12 hint 43 locate farm 53 junk
Step I: junk hint 43 locate farm 53 12

Shifting means just replacing only one element from its position.
Ex:
Input: 12 hint 43 locate farm 53 junk
Step I: junk 12 hint 43 locate farm 53

Step VII is the final step of the input. The underlined words are used to indicate the words that will be interchanged in the each subsequent step.

Basically Asked Questions Types for Input and Output :

  • Arranging the Numbers and words either in Ascending/Descending order or Dictionary order.
  • All words at one End and all numbers at one end or vice versa.
  • Others come as a mix of words and numbers.
  • Otherwise Only Word or Number series will be given in Input and Output Questions.
  • More complicated ones may even involve symbols.

Example 1:
Input: hike 35 29 rate interest 43 fixed 46  ( SBI PO Mains)

Words are arranged alphabetically (forward or reversed) as per their positions in the dictionary while numbers are arranged in ascending/descending order.
Step 1:   46 hike 35 29 rate interest 43 fixed
Step 2:   fixed 46 hike 35 29 rate interest 43
Step 3:   43 fixed 46 hike 35 29 rate interest
Step 4:   hike 43 fixed 46 35 29 rate interest
Step 5:   35 hike 43 fixed 46 29 rate interest
Step 6:   interest 35 hike 43 fixed 46 29 rate
Step 7:   29 interest 35 hike 43 fixed 46 rate
Step 8:   rate 29 interest 35 hike 43 fixed 46

  • Here first you have observe how Last step is i.e STEP VIII. One Word and One Number alternate rearrangement. Also words are arranged in Alphabetically Descending order and numbers in Ascending order.
  • Now see Step I and Step II. In first one biggest number among them is SHIFTED from last to first and in second one Word is shifted i.e only one element was moved in each.
  • By this you know how the rearrangement process is taken and you can solve the question in no time.

For all this process you require less than a minute, for solving actual input less than 2 minutes (if it requires 8 to 10 steps for output) and finally just by glancing you can save a lot of time like this.

Example 2:

Input: 22 care 59 never 87 sold 15 land house 43 (SBI PO mains)

Step I: care 22 59 never 87 sold 15 land house 43
Step II: care 15 22 59 never 87 sold land house 43
Step III: care 15 house 22 59 never 87 sold land 43
Step IV: care 15 house 22 land 59 never 87 sold 43
Step V: care 15 house 22 land 43 59 never 87 sold
Step VI: care 15 house 22 land 43 never 59 87 sold
Step V: care 15 house 22 land 43 never 59 sold 87
Step V is the last step of the given input.

After observing the arrangement, we can conclude that in first step; word is arranged in left side in ascending order and in second step number is arranged in left side in increasing order. The process continues till the last step.

Output : After arranging word “house” in step III our next arrangement will be “22”, but is already come in its place without arranging, so we will not count 22 in our next step and move to word “land” which will be arrange step IV.

The same case is repeated in step VI, after arranging the word “never” our next arrangement will be “59”, but is already come in its place without arranging, so we will not count 59 in our next step and move to word “sold” which will be arrange step V.

Example 3

Input: more 40 great and 60 74 will (SBI PO mains)

Step I: 74 more 40 great 60 will and
Step II: 74 60 more 40 will and great
Step III: 74 60 40 will and great more
Step IV: 74 60 40 and great more will
Step IV: is the last step of the arrangement of the above input as the intended rearrangement is obtained.

After observing the arrangement, we can conclude that in each steps; the numbers are arranging in decreasing order on the left end and words are arranging in alphabetic order on the right end. The process continues till the last steps.

Output : In arrangement problems, we cannot find previous step. If Step IV or Step V is given and in question and it was asked to find the previous step, we cannot find it. So, our answer will be cannot determined.

Points to Remember

For arranging the logic of arrangement you are advised to follow a certain things.

Have a glance at the first and the last step. This will give you a rough idea of what really happened in between the steps.

  1. Have a quick glance at every step to know how this is being carried out.
  2. Rearrange the given input step by step or if required move from final step to the input.

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Teja Sree

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