10th Class Mental Ability Sequential Output Tracing Sequential Output Tracing

When an input of some numbers is given to a number generating machine, it gives sets of numbers in a specific pattern as an output.

Infect an input may be of letters/words or numbers or combination of both.

A student is required to analyses the data (input and output) and identify the pattern to answer the questions.

Let us write some commonly used patterns:

1.     Arrangement of the given numbers in ascending/descending order.

2.     Arrangement of the given numbers stepwise in the order: greatest, smallest, second greatest, second smallest, and so on.

3.     Arrangement of given words in alphabetical and reverse alphabetical order.

4.     Arrangement of a particular set of words in the reverse order, stepwise.

EXAMPLE

1.       Direction (I-II): Study the following information to answer the questions given below:

A number arrangement machine when given an input of numbers, rearranges them by following a particular rule in each step. The following is an illustration of an input and steps of rearrangement.

This is the final arrangement and Step V is the last step for this input.

I.          How many steps will be required to get the final output from the following input?

Input:    39    88    162   450   386   72    2

(a) Two                         (b) Three          

(c) Four                         (d) Five

II.         What will be the fourth step for an input whose second step is given below?

Explanation (I-II):

In the given arrangement, the numbers are rearranged as highest/ lowest, 2nd highest, 2nd lowest, 3rd highest, 3rd lowest and so on alternately.

I.            (d): 

So, Step V is the last step for the given input.

II.         (c):

2.       Direction (I-II): Study the following information carefully and answer the given questions.

A word and number arrangement machine when given an input line of words and numbers rearranges them following a particular rule in each step. The following is an illustration of input and rearrangement.

And Step V is the last step of the above input.

I.          Step II of an input is: zebra 12 bank carriage 46 31 29 dusk. Which of the following steps will be the second last?

(a) IV                            (b) V              

(c) VII                           (d) VIII

II.         Step III of an input is: train 23 star 61 32 fall hard 53.  Which of the following is definitely the input?

Explanation (I-II):

The words are arranged in reverse alphabetical arranged in ascending order alternately.

I.          (b) :

Step VI is the last step. So, step V is the second last.

II.         (d): The terms can be rearranged in several ways, so it is not possible to determine the input accurately.