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Q:

An electronic device when fed with the numbers, rearranges them in a particular order following certain rules. The following is a step-by-step process of rearrangement for the given input of numbers.

 

Input    :- 85   16   36   04   19   97   63   09

Step I   :- 97   85   16   36   04   19   63   09

Step II  :- 97   85   63   16   36   04   19   09

Step III :- 97   85   63   36   16   04   19   09

Step IV :- 97   85   63   36   19   16   04   09

Step V  :- 97   85   63   36   19   16   09   04

(for the given input step V is the last step).

 

Which of the following will be the last step for the given input ?

Input :- 03   31   43   22   11   09 

A) IV B) V
C) VI D) None of these
 
Answer & Explanation Answer: B) V

Explanation:

Clearly, in the given arrangement, the numbers have been arranged in descending order in a sequence, altering the position of only one number in each step

Input       : 03   31   43   22   11   09

Step I      : 43   03   31   22   11   09
Step II     : 43   31   03   22   11   09
Step III   : 43   31   22   03   11   09
Step IV   : 43   31   22   11   03   09
Step V    : 43   31   22   11   09   03

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Filed Under: Sequential Output Tracing

Q:

Find out the two signs to be interchanged for making following equation correct

5 + 3 x 8 - 12 / 4 =3

A) + and - B) - and /
C) + and x D) + and /
 
Answer & Explanation Answer: B) - and /

Explanation:

On interchanging - and /, we get the equation as

5 + 3 x 8 / 12 - 4 = 3

or 5 + 3 x (2/3) - 4 = 3

or 3 = 3, which is true.

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Filed Under: Mathematical Operations

Q:

If × stands for 'addition', ÷ stands for 'subtraction', + stands for 'multiplication' and-stands for 'division', then 20 × 8 ÷ 8 - 4 + 2 = ?

A) 80 B) 25
C) 24 D) 5
 
Answer & Explanation Answer: C) 24

Explanation:

By the Given data , We have the expression:

20 + 8 - 8 ÷ 4 × 2 = 20 + 8 - 2 × 2 = 20 + 8 - 4 = 24.

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Filed Under: Mathematical Operations

Q:

Given intercharges : 

Signs + and x and numbers 4 and 5.

A) 5 x 4 + 20 = 40 B) 5 x 4 + 20 = 85
C) 5 x 4 + 20 = 104 D) 5 x 4 + 20 = 95
 
Answer & Explanation Answer: C) 5 x 4 + 20 = 104

Explanation:

 On interchanging + and x and 4 and 5 in (c),

we get the equation as 
4 + 5 x 20 = 104 or 104 = 104, which is true.

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Filed Under: Mathematical Operations

Q:

Given interchanges : 

Signs + and - , numbers 4 and 8.

A) 4 + 8 - 12 = 12 B) 4 - 8 + 12 = 0
C) 8 + 4 - 12 = 24 D) 8 - 4 + 12 = 8
 
Answer & Explanation Answer: B) 4 - 8 + 12 = 0

Explanation:

 On interchanging + and - and 4 and 8 in (b),

we get the equation as

8 + 4 - 12 = 0 
or 12 - 12 = 0
or 0 = 0, which is true.

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Filed Under: Mathematical Operations

Q:

In the following question, a matrix of certain characters is given.These characters follow a certain trend, row-wise or column wise.Find out this trend and choose the missing character accordingly.

B G N
D J R
G N ?

A) U B) V
C) W D) X
 
Answer & Explanation Answer: C) W

Explanation:

 The letters in the first row follow the sequence +5, +7.

The letters in the second row follow the sequence +6, +8.
In the third row, the first letter G moves 7 steps forward to give the second letter N.
Clearly, the missing letter will be 9 steps ahead of N i.e. W.

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Filed Under: Inserting The Missing Character

Q:

In the following question, a matrix of certain characters is given.These characters follow a certain trend, row-wise or column wise.Find out this trend and choose the missing character accordingly.

A D H
F I M
? N R

A) K B) N
C) O D) P
 
Answer & Explanation Answer: A) K

Explanation:

 

The letters in the second and third rows are five steps ahead of those in the first and second trespectively.
So, the missing letter will be five steps ahead of F, which is K.

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Filed Under: Inserting The Missing Character

Q:

In the following question, a matrix of certain characters is given.These characters follow a certain trend, row-wise or column wise.Find out this trend and choose the missing character accordingly.

1 4 9 ?
1 2 3 4
2 4 6 ?

A) 16,8 B) 49,7
C) 36,4 D) 25,5
 
Answer & Explanation Answer: A) 16,8

Explanation:

 

The numbers in the first row form a series 12, 22, 32.
So, missing number in the first row = 42 = 16.
The number in the second row from the series, 1, 2, 3, 4.
The number in the third row from the series 2, 4, 6.
So, missing number in the third row = 6 + 2 = 8.

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Filed Under: Inserting The Missing Character