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Q:

A boat whose speed in still water is 9 kmph, goes 12 km downstream and comes back in 3 hrs. Find the speed of the stream?

A) 1 kmph	B) 3 kmph
C) 5 kmph	D) 4 kmph

Answer & Explanation Answer: B) 3 kmph

Explanation:

Let the speed of the stream = x kmph

From the given data,

$\frac{12}{9 + x} + \frac{12}{9 - x} = 3 h r s$

$3 x^{2} = 27$

=> x = 3 kmph

Therefore, the speed of the stream = 3 kmph

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Filed Under: Boats and Streams
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Q:

Crack the Missing Letter Puzzle?

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A) I	B) K
C) L	D) W

Answer & Explanation Answer: C) L

Explanation:

13 x 2 = 26 => Z (opposite side)

12 x 2 = 24 => X (opposite side)

13 x 1 = 13 => M (opposite side)

12 x 1 = 12 => L (opposite side)

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Filed Under: Missing letters puzzles
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Q:

According to a survey, which country has become the second largest smartphone market in the world?

A) Japan	B) China
C) India	D) USA

Answer & Explanation Answer: C) India

Explanation:

According to a Report by analyst firm Canalys, India has become the second largest smartphone market in the world.

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Filed Under: General Awareness
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Q:

If the LCM and HCF of two numbers are equal, then the numbers must be

A) Prime Numbers	B) Composite Numbers
C) Equal	D) Co- prime Numbers

Answer & Explanation Answer: C) Equal

Explanation:

If LCM = HCF then, the two numbers are equal.

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Filed Under: Arithmetical Reasoning
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Q:

The construction of Warangal Fort was started by ______ ?

A) Beta - II	B) Rudra
C) Jayapa	D) Prola - II

Answer & Explanation Answer: B) Rudra

Explanation:

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Filed Under: Indian History
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Q:

In a daily morning walk three persons step off together. their steps measure 75 cm, 80 cm and 85 cm respectively. What is the minimum distance each should walk so that thay can cover the distance in complete steps ?

A) 222 m 44 cm	B) 204 m
C) 201 m 21 cm	D) 208 m

Answer & Explanation Answer: B) 204 m

Explanation:

To find the minimum distance, we have to get the LCM of 75, 80, 85

Now, LCM of 75, 80, 85 = 5 x 15 x 16 x 17 = 20400

Hence, the minimum distance each should walk so that thay can cover the distance in complete steps = 20400 cms = 20400/100 = 204 mts.

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Filed Under: Time and Distance
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Q:

The original ASCII code used ___________ bits of each byte, reserving that last bit for error checking ?

A) 5	B) 6
C) 7	D) 8

Answer & Explanation Answer: C) 7

Explanation:

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Filed Under: Computer
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Q:

Which of the following has become the first country to grant citizenship to a Robot ?

A) Saudi Arabia	B) New Zealand
C) China	D) Japan

Answer & Explanation Answer: A) Saudi Arabia

Explanation:

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Filed Under: General Awareness
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