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Q:

The number of solutions of the equation $l o g_{\frac{x}{2}} (x^{2}) + 40 l o g_{4 x} (\sqrt{x}) - 14 l o g_{16 x} (x^{3}) = 0$ is:

A) 0	B) 1
C) 2	D) 3

Answer & Explanation Answer: D) 3

Explanation:

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Filed Under: Logarithms
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Q:

The average of a set of whole numbers is 27.2. when the 20% of the elements are eliminated from the set of numbers then the average become 34. The number of elements in the new set of numbers can be :

A) 27	B) 35
C) 52	D) 63

Answer & Explanation Answer: C) 52

Explanation:

only (c) is correct since it is divisible by 4.

Let the original number of element be x then the new no.of elements will be

$\frac{4 x}{5} = K$

So K must be divisible by 4

Since, x = Kx5/4

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Filed Under: Percentage
Exam Prep: AIEEE , Bank Exams , CAT
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Q:

A number X is mistakenly divided by 10 instead of being multiplied by 10. What is the percentage error in the result?

A) -99%	B) +99%
C) -100%	D) +100%

Answer & Explanation Answer: A) -99%

Explanation:

By mistake = x/10

Actual value = x * 10

% Change = $\frac{10 x - \frac{x}{10}}{10 x} \times 100 = \frac{99}{100} \times 100$ = 99% (negative)

Since actual value is greater than the wrong value.

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Filed Under: Percentage
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Q:

What is usage of Sequence Number in Relaible Transmission?

Answer

The protocol specifies that frames need to be numbered. This is done by using sequence numbers. A field is added to the data frame to hold the sequence number of that frame. Since we want to minimize the frame size, the smallest range that provides unambiguous communication. The sequence numbers can wrap around.

Workspace

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Subject: Network Administration

Q:

What command-line tool would help you discover for which port numbers your computer is listening?

Answer

netstat -n (on Dos prompt)

Workspace

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Subject: Network Administration

Q:

Find the wrong number in the given series.

8, 27, 125, 343, 1381

A) 27	B) 8
C) 343	D) 1381

Answer & Explanation Answer: D) 1381

Explanation:

Given series follows Cubes on Prime Numbers

i.e $2^{3}, 3^{3}, 5^{3}, . . .$ but $9^{3}$ is 1331

so 1381 is wrong

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Filed Under: Number Series
Exam Prep: AIEEE , Bank Exams , CAT , GATE
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Q:

Find the wrong number in the series.

3, 8, 15, 24, 34, 48, 63

A) 15	B) 24
C) 34	D) 48

Answer & Explanation Answer: C) 34

Explanation:

The difference between consecutive numbers of the given series are respectively 5, 7, 9, 11, 13, and 15.

Therefore, 24+11=35 But in your problem it is given as 34.so 34 is wrong number

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Filed Under: Number Series

Q:

Find the wrong number in the series

7, 28, 63, 124, 215, 342, 511

A) 28	B) 124
C) 215	D) 342

Answer & Explanation Answer: A) 28

Explanation:

Here the number follows the given rule

$2^{3} - 1, 3^{3} - 1, 4^{3} - 1, 5^{3} - 1, . . .$

But 28 has been given in problem series.

so 28 is wrong number.

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Filed Under: Number Series
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