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Q:

The market value of a 10.5% stock, in which an income of Rs. 756 is derived by investing Rs. 9000, brokerage being 1/4%, is:

A) 108.25	B) 112.20
C) 124.75	D) 125.25

Answer & Explanation Answer: C) 124.75

Explanation:

For an income of Rs. 756, investment = Rs. 9000.

For an income of $R s . \frac{21}{2}$ , investment = $R s . \frac{9000}{756} \times \frac{21}{2}$ = Rs. 125.

For a Rs. 100 stock, investment = Rs. 125.

Market value of Rs. 100 stock = $R s . (125 - \frac{1}{4})$ = Rs. 124.75

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Filed Under: Stocks and Shares

Q:

What is cladding?

Answer

A layer of a glass surrounding the center fiber of glass inside a fiber-optic cable.

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Subject: Networking
Job Role: Network Engineer

Q:

A 12% stock yielding 10% is quoted at:

A) 67	B) 110
C) 112	D) 120

Answer & Explanation Answer: D) 120

Explanation:

To earn Rs. 10, money invested = Rs. 100.

To earn Rs. 12, money invested = $R s . (\frac{100}{10} * 12)$ = Rs. 120.

Market value of Rs. 100 stock = Rs. 120.

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Q:

What is attenuation?

Answer

The degeneration of a signal over distance on a network cable is called attenuation.

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Subject: Networking
Job Role: Network Engineer

Q:

Four persons are to be choosen from a group of 3 men, 2 women and 4 children. Find the probability of selecting 1 man,1 woman and 2 children.

A) 2/7	B) 3/7
C) 4/7	D) 3/7

Answer & Explanation Answer: A) 2/7

Explanation:

Total number of persons = 9

Out of 9 persons 4 persons can be selected in $9 C_{4}$ ways =126

1 man,1 woman and 2 children can be selected in $3 C_{1} * 2 C_{1} * 4 C_{1}$ ways =36

So,required probability = 36/126 =2/7

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Filed Under: Probability

Q:

How many bricks, each measuring 25 cm x 11.25 cm x 6 cm, will be needed to build a wall of 8 m x 6 m x 22.5 cm?

A) 5600	B) 6000
C) 6400	D) 7200

Answer & Explanation Answer: C) 6400

Explanation:

Number of bricks = volume of the wall/volume of one brick

= (800 x 600 x 22.5)/(25 x 11.25 x 6 )= 6400

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Filed Under: Volume and Surface Area

Q:

A large cube is formed from the material obtained by melting three smaller cubes of 3, 4 and 5 cm side. What is the ratio of the total surface areas of the smaller cubes and the large cube?

A) 2 : 1	B) 3 : 2
C) 25 : 18	D) 27 : 20

Answer & Explanation Answer: C) 25 : 18

Explanation:

Volume of the large cube = $(3^{3} + 4^{3} + 5^{3})$ = 216 cu.cm.

Let the edge of the large cube be a.

So, $a^{3}$ = 216

=>a = 6 cm.

Required ratio = $\frac{6 (3^{2} + 4^{2} + 5^{2})}{6 (6^{2})} = \frac{25}{18}$

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Filed Under: Volume and Surface Area

Q:

A man invested Rs. 1552 in a stock at 97 to obtain an income of Rs. 128. The dividend from the stock is:

A) 8.5%	B) 7.5%
C) 8%	D) 9%

Answer & Explanation Answer: C) 8%

Explanation:

By investing Rs. 1552, income = Rs. 128.

By investing Rs. 97, income = $R s . (\frac{128}{1552} \times 97)$ = Rs. 8.

Dividend = 8%

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Filed Under: Stocks and Shares

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