Reasoning: Machine Input-Output Questions Set 31

Directions (1-5): A string of numbers is given as input. The further steps given are obtained by applying certain logic. Numbers of step II have been obtained by using at least 1 digit of each number in step I. Each step is a resultant of previous step only.


  1. Which number is greatest in step 1?
    A) 53
    B) 25
    C) 63
    D) 60
    E) Other than options given
    View Answer
     Option C
    For given input:::
    Step I: 63…..…25……..21  — Subtraction
    Step II:      10……14   (6*2 – 2 = 10)
    Step III:       1……..5 –Addition
    Step IV:            3  — Average 
  2. What is the second smallest number obtained in any step of given input?
    A) 8.5
    B) 7.5
    C) 3
    D) 10.5
    E) 7
    View Answer
     Option C
  3. Find the difference between sum of numbers obtained in 1st step and sum of numbers obtained in all other steps.
    A) 61
    B) 67
    C) 89
    D) 72
    E) 76
    View Answer
     Option E
    Required difference = (63+25+21) – (10+14+1+5+3)
  4. What is the difference between the second largest number and the smallest number obtained in any steps?
    A) 24
    B) 18
    C) 15
    D) 29
    E) 21
    View Answer
     Option A
    Required difference = 25 – 1 = 24
  5. What is the average of numbers obtained in last 2 steps?
    A) 4
    B) 5
    C) 9
    D) 7
    E) None of these
    View Answer
     Option E
    Required average =(1+3+5)/3 = 3 

Directions (6-10): A string of numbers is given as input. The further steps given are obtained by applying certain logic. Numbers of step II have been obtained by using at least 1 digit of each number in step I. Each step is a resultant of previous step only.


  1. What is the average of numbers obtained in last 2 steps?
    A) 8
    B) 5
    C) 3
    D) 6
    E) 4
    View Answer
     Option E
    Step 1:  85……….76……..96  —- Multiplication

    Step 2:         24……….17  —– Addition   (8+7+9 = 24, 5+6+6 = 17)
    Step 3:           2………..6  —— Subtraction
    Step 4:                 4    —– Average
    Required Average = (2+6+4)/3 = 12/3 = 4
  2. What is the smallest number obtained in any step of given input?
    A) 6
    B) 4
    C) 3
    D) 2
    E) 7
    View Answer
     Option D
  3. Find the difference between sum of numbers obtained in 1st step and sum of numbers obtained in all other steps.
    A) 204
    B) 217
    C) 189
    D) 222
    E) 176
    View Answer
     Option A
    Required difference = (85+76+96) – (24+17+2+6+4)
  4. What is the difference between the largest and the second smallest numbers obtained in any steps?
    A) 92
    B) 108
    C) 115
    D) 69
    E) 81
    View Answer
     Option A
    Required difference = 96 – 4 = 92
  5. Digit 7 repeats how much times in any numbers obtained in all steps?
    A) Three
    B) Five
    C) One
    D) Two
    E) None
    View Answer
     Option D

Click here for Machine Input/Output Questions


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100 Thoughts to “Reasoning: Machine Input-Output Questions Set 31”

  1. Supriti Banerjee

    Mam pls chk qus no 6. Avrg of step 2

      1. heena

        Mam 1st Vale me 2nd step ni smjh AA rhi h

        1. See the given example
          4*5 – 3 = 20
          7*2 – 1 = 13
          Question me given hai ki second step -. 1st step k teeno numbers use karke aaega. So consider all 3 three numbers of 1st step while computing for 2nd step

          1. heena

            Ok mam…thanq

          2. Lee64

            Explain second step of second puzzle plz.

      2. heena

        Mam dono k hi 2nd step nikalna mushkil padhta h

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