# 10th Class Mental Ability Sequential Output Tracing Sequential Output Tracing

Sequential Output Tracing

Category : 10th Class

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.

 Input : 48 245 182 26 99 542 378 297 Step I : 542 48 245 182 26 99 378 297 Step II : 542 26 48 245 182 99 378 297 Step III : 542 26 378 48 245 182 99 297 Step IV: 542 26 378 48 297 245 182 99 Step V : 542 26 378 48 297 99 245 182

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?

 Step II : 765 42 183 289 542 65 110 350 (a) 765 42 542 65 110 183 289 350 (b) 765 42 542 350 183 289 65 110 (c) 765 42 542 65 183 289 110 350 (d) Can't be determined

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):

 Input: 39 88 162 450 386 72 29 Step I: 450 39 88 162 386 72 29 Step II: 450 29 39 88 162 386 72 Step III: 450 29 386 39 88 162 72 Step IV: 450 29 386 39 162 88 72 Step V: 450 29 386 39 162 72 88

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

II.         (c):

 Step II : 765 42 183 289 542 65 110 350 Step III : 765 42 542 183 289 65 110 350 Step IV : 765 42 542 65 183 289 110 350

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.

 Input  : quick fire 15 28 39 war 19 yellow Step I   : yellow quick fire 15 28 39 war 19 Step II  : yellow 15 quick fire 28 39 war 19 Step III : yellow 15 war quick fire 28 39 19 Step IV : yellow 15 war 19 quick fire 28 39 Step V  : yellow 15 war 19 quick 28 fire 39

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?

 (a) 23 star 61 train 32 fall hard 53 (b) star train 61 23 32 fall hard 53 (c) 61 star 23 train 32 fall hard 53 (d) Can't be determined

Explanation (I-II):

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

I.          (b) :

 Step II : zebra 12 bank carriage 46 31 29 dusk Step III : zebra 12 dusk bank carriage 46 31 29 Step IV : zebra 12 dusk 29 bank carriage 46 31 Step V : zebra 12 dusk 29 carriage bank 46 31 Step VI : zebra 12 dusk 29 carriage 31 bank 46

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.

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