Reasoning Ability: Machine Input/Output for IBPS PO, RRB, CLERK Part-3

     Directions (Q.1-5): Study the following information carefully and answer the given questions. When a word and number arrangement machine is given an input line of words and numbers, it arranges them following a particular rule. The following is an illustration of Input and rearrangement. (All the numbers are two digit numbers.)

Input: 49  4  16  9  64  25  36

Step I: 53  8  20  13  68  29  40

Step II: 8  8  2  4  5  2  4

Step III: 10  6  4  2  7  0  6

Step IV: 0  10  6  4  2  7  6

Step V: 2  0  10  6  4  7  6

Step VI: 4  2  0  10  6  7  6

Step VII: 6  4  2  0  10  7  6

Step VIII: 6  6  4  2  0  10  7

Step IX: 7  6  6  4  2  0  10
Step X: 10  7  6  6  4  2  0  

     And Step X is the last step of the rearrangement as the desired arrangement is obtained. As per rules followed in the above steps, find out in each of the questions the appropriate step for the given input.

Input: 121  81  100  289  16  25  4

Q.1. Which of the following is third to the right of the second from the left end of Step IV in the above arrangement?

    A. 1

    B. 10

    C. 2

    D. 3

    E. None of these

Q.2. How many steps are required to complete this arrangement?

    A. VII

    B. VI

    C. VIII

    D. V

    E. X

Q.3. Which of the following will be Step V after arrangement?

    A. 2  5  10  1  3  6  10

    B. 2  0  10  7  3  4  10

    C. 8  7  1  7  2  4  0

    D. 6  0  3  8  4  2  1

    E. 2  7  10  7  3  4  5

Q.4. What is the sum of 2nd element from the left end and 4th element from the right end according to the Step VI?

    A. 12

    B. 8

    C. 15

    D. 2

    E. None of these

Q.5 Which element exactly between ‘7’ and ‘2’ in Step X?

    A. 5, 9

    B. 4, 3

    C. 6, 2

    D. 0, 10

    E. None of these

Answers:

 1. D.

 2. E.

 3. B.

 4. A.

 5. B.

Solution:

Input: 121  81  100  289  16  25  4

Step I: 125  85  104  293  20  29  8

Step II: 8  4  5  5  2  2  8

Step III: 10  2  7  3  4  0  10

Step IV: 0  10  2  7  3  4  10

Step V: 2  0  10  7  3  4  10

Step VI: 3  2  0  10  7  4  10

Step VII: 4  3  2  0  10  7  10

Step VIII: 7  4  3  2  0  10  10

           Step IX: 10  7  4  3  2  0  10

           Step X: 10  10  7  4  3  2  0

        Step I: +4, +4, +4....

        Step II: total of the digits into a single number.

  Step III: +2, -2, +2, -2....

  Step IV-X: Arrange into a descending order in a particular way.

Reasoning Ability: Machine Input/Output for IBPS PO, RRB, CLERK Part-2

Reasoning Ability: Machine Input/Output for IBPS PO, RRB, CLERK Part-1