IBPS PO is one of the most sought after exams in India. PO exam for 2017 is slated to be conducted in the month of October. In this blog, let us see how to prepare to tackle Input output questions for IBPS PO. Aspirants can look at IBPS PO previous year papers to get an idea about the topic.
Input output questions for IBPS PO is one of the most omitted topics. Aspirants often misjudge the level of difficulty of the questions and end up leaving them. Taking IBPS PO online mock tests will help candidates to gauge the level of difficulty of questions by glancing at them.
Aspirants can prepare for IBPS PO online to improve their grasp of fundamentals. Having strong foundation will help aspirants tackle unexpected questions in the exam.
Input output questions for IBPS PO:
Pattern recognition is the bed rock of Input output questions for IBPS PO. Usually, the question displays the outputs at every stage the machine performs a particular operation. Based on the outputs at various stages, candidates must figure out the logic.
Once aspirants figure out the logic, they have to apply the same on the other set of input that the question gives to arrive at the answer.
Let us start with some easy questions and then move up the ladder.
Question 1:
A machine on giving the following input performs a series of operations on it and finally displays the output. Figure out the logic on which the machine operates.
Input: 47 low 89 high 23 medium
I: 23 47 low 89 23 medium high
II: 23 47 89 medium high low
III: 23 47 89 high low medium
Step III is the final output.
Explanation:
We can see that in step 1, the machine places the smallest number in the extreme left position. It places the word that comes first in the alphabetical order on the extreme right.
In the second step, the machine places the second least number behind the least number and the word that comes second in the alphabetical order behind the word that comes first.
This process is continued indefinitely till the machine arranges all the numbers and words in order.
Question 2:
A machine on giving the following input performs a series of operations on it and finally displays the output. Figure out the logic on which the machine operates.
Input: Eight ants fly high over the ocean waters
I: fly high the waters eight ants over ocean
II: fly high the waters ants eight over ocean
III: fly high the waters ants eight ocean over
Step III is the final output.
Solution:
In the first step, the machine moves the words starting with vowels to the right side and words starting with consonants to the left side.
The machine starts to arrange the groups according to the alphabetical order in the second step.
In the third step, the machine completes arranging the words (starting with consonants and vowels seperately) in alphabetical order. A point to note is that the machine completes the operations in 3 steps only for this particular case. The number of steps will vary depending on the input.
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Question 3:
Input: 34 ink 25 blue 98 sketch 64 pen 78 drawing good break 24 16.
I: 98 34 ink 25 blue sketch pen 78 drawing good break 24 16 64.
II: 98 78 34 ink blue sketch pen drawing good break 24 16 25 64.
III: 98 78 34 ink blue sketch pen drawing good break 24 16 25 64.
IV: 98 78 34 24 ink blue sketch pen drawing good break 16 25 64.
V: 98 78 34 24 blue ink sketch pen drawing good break 16 25 64.
VI: 98 78 34 24 blue break ink sketch pen drawing good 16 25 64.
VII7: 98 78 34 24 blue break drawing ink sketch pen good 16 25 64.
VIII: 98 78 34 24 blue break drawing good ink sketch pen 16 25 64.
IX: 98 78 34 24 blue break drawing good ink sketch pen 16 25 64.
X: 98 78 34 24 blue break drawing good ink pen sketch 16 25 64.
Step X is the final output.
Solution:
This question is a simple one with many steps. The machine’s logic is easy to figure out. Owing to the massive size of the input, the number of steps is large.
In the first step, the machine places the highest non-perfect square number at the left extreme and the highest perfect square number at the extreme right.
In subsequent steps, the machine arranges the non-perfect squares in descending order starting from the left extreme and perfect squares from the right extreme.
A point to note is that if some numbers are already in order, the machine does not skip the step. Instead, it performs the step without making any changes. This point is crucial since if the question asks for the step number for a different input, the answers will vary.
Also, the words are left untouched until machine sorts out the numbers. After sorting the numbers, the machine arranges the words in ascending order one by one from left to right.
The machine performs 2 operations simultaneously on numbers but only one operation on words in each step. The question is simple by nature. So, if the question asks to find out the output for a smaller input, the steps will be a lot simpler.
Hence, aspirants must not use the size of a question as an indicator of its toughness while solving input output questions for IBPS PO. Rather, they must try to figure out the logic to arrive at an informed decision.
To know more about other types of questions in reasoning section, try reading data sufficiency questions for IBPS PO, must solve puzzles for IBPS PO, seating arrangement questions for IBPS PO and high-level reasoning questions for IBPS PO.
