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Q:

The difference between simple interest and compound interest of a certain sum of money at 20% per annum for 2 years is Rs. 56. Then the sum is :

A) Rs. 3680	B) Rs. 2650
C) Rs. 1400	D) Rs. 1170

Answer & Explanation Answer: C) Rs. 1400

Explanation:

We know thatThe Difference between Compound Interest and Simple Interest for n years at R rate of interest is given by $C . I_{n} - S . I_{n} = P {[\frac{R}{100}]}^{n}$

Here n = 2 years, R = 20%, C.I - S.I = 56

$56 = P {[\frac{20}{100}]}^{2} = > P = 56 x {(5)}^{2} = > P = 56 x 25 = > P = Rs . 1400$

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Filed Under: Compound Interest
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Q:

What are the Monomers that make up Proteins?

A) Amino acids	B) Nucleotides
C) Disaccharides	D) Chaperones

Answer & Explanation Answer: A) Amino acids

Explanation:

Proteins are long chains of Amino acids. That is in brief, Amino acids are the monomers of Proteins. Amino acids are compounds which contain both an amino group and a carboxylic group. Proteins are made up of 20 essential amino acids.

Monomer means a small molecule of an organic substance i.e, building block in general.

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Filed Under: Chemistry
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Q:

If sum of upstream and downstream speed of a boat is 82 kmph, and the boat travels 105 km. upstream in 3 hr, Find the time taken by boat to cover 126 km downstream.

A) 2.8 hrs	B) 2.7 hrs
C) 2.6 hrs	D) 2.5 hrs

Answer & Explanation Answer: B) 2.7 hrs

Explanation:

Let Speed of boat in still water = b

Let Speed of still water = w

Then we know that,

Speed of Upstream = U = boat - water

Speed of Downstream = D = boat + water

Given, U + D = 82

b - w + b + w = 82

2b = 82

=> b = 41 kmph

From the given data,

41 - w = 105/3 = 35

w = 6 kmph

Now,

b + w = 126/t

=> 41 + 6 = 126/t

=> t = 126/47 = 2.68 hrs.

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Filed Under: Boats and Streams
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Q:

Select the correct statement about the Evolution of Animals.

A) The oldest generally accepted fossils of large animals range in age from 565 to 550 million years old.	B) No animal fossils are found in strata formed before the Cambrian explosion.
C) Approximately half the phyla of living organisms are found in Cambrian sediments.	D) All the above

Answer & Explanation Answer: A) The oldest generally accepted fossils of large animals range in age from 565 to 550 million years old.

Explanation:

The oldest generally accepted fossils of large animals range in age from 565 to 550 million years old.

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Filed Under: Animals and Birds
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Q:

The More You Have, The Less You See. What is it?

A) Light	B) Darkness
C) Sight	D) None

Answer & Explanation Answer: B) Darkness

Explanation:

The More You Have the Darkness, The Less You See i.e, visible less.

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Filed Under: Logic Puzzles
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Q:

How long is an IPv6 address?

A) 128 bytes	B) 32 bits
C) 128 bits	D) 32 bytes

Answer & Explanation Answer: C) 128 bits

Explanation:

IPv6 - Internet Protocol Version 6.

IPv6 addresses have a size of 128 bits.

Internet Protocol Version 6 [IPv6] is the successor to the Internet's first addressing infrastructure, Internet Protocol version 4 (IPv4).

In contrast to IPv4, which defined an IP address as a 32-bit value, IPv6 address have a size of 128 bits.

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Filed Under: Networking
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Q:

Which of the following is not a Fixed Cost?

A) Insurance	B) Salaries
C) Depreciation	D) Direct Materials

Answer & Explanation Answer: D) Direct Materials

Explanation:

Direct Materials doesn't come under Fixed Cost because it vary with changes in the activity level of a business.

Fixed Cost :

A fixed cost is a cost that does not change over the short-term, even if a business experiences changes in its sales volume or other activity levels.

It is of some importance to understand the extent and nature of the fixed costs in a business, since a high fixed-cost level requires a business to maintain a high revenue level in order to avoid generating losses.

Examples of Fixed Cost are:

Insurance, Salaries, Rent, Property Taxes,...

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Filed Under: Indian Economy
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Q:

8(6+5) - 10 =?

A) 76	B) 78
C) 80	D) 82

Answer & Explanation Answer: B) 78

Explanation:

8(6+5) - 10 = ?

? = 8(11) - 10

? = 88 - 10

? = 78.

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Filed Under: Analytical Reasoning
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