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Q:

India's which is the India's only aircraft carrier, will be fitted with a marine hydraulic system to boost the air operations of the ship, for the first time?

A) INS Vikramaditya	B) INS Vikrant
C) INS Tarini	D) INS Viraat

Answer & Explanation Answer: A) INS Vikramaditya

Explanation:

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Q:

Two numbers are such that the sum of twice the first number and thrice the second number is 36 and the sum of thrice the first number and twice the second number is 39. Find the difference between the numbers?

A) 15	B) 3
C) 9	D) 6

Answer & Explanation Answer: A) 15

Explanation:

Let the required two numbers be a, b

From the given data,

2a + 3b = 36 .....(1)

3a + 2b = 39 .....(2)

Now, by solving 1 and 2 eqnts, we get

5a = 45

a = 9 ....(3)

Put (3) in (1), we get

2(9) + 3b = 36

=> 18 + 3b = 36

3b = 36 - 18

=> b = 18/3 = 6

Required, difference between the numbers = a + b = 9 + 6 = 15.

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Q:

It cannot be seen, it cannot be felt, Cannot be heard, cannot be smelt, Lies behind stars and under hills, and empty holes it fills. Comes first follows after, Ends life kills laughter.

Answer

Darkness.

Workspace

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Subject: Logic Puzzles Exam Prep: AIEEE , Bank Exams , CAT , GATE , GRE
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Q:

Out of three numbers, the first is twice the second and is half of the third. If the average of the three numbers is 56, what will be the sum of the highest number and the lowest number?

A) 120	B) 160
C) 80	D) 60

Answer & Explanation Answer: A) 120

Explanation:

Let the three numbers be x, y, z.

From the gien data,

x = 2y ....(1)

x = z/2 => z = 2(2y) = 4y .....(From 1) ...........(2)

Given average of three numbers = 56

Then,

$\frac{x + y + z}{3} = 56 \frac{2 y + y + 4 y}{3} = 56 (From 1 & 2) 7 y = 56 x 3 y = 24$

Now,

x = 2y => x = 2 x 24 = 48

z = 4y = 4 x 24 = 96

Now, the highest number is z = 96 & smallest number is y = 24

Hence, required sum of highest number and smallest number

= z + y

= 96 + 24

= 120.

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Filed Under: Average
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Q:

Claude Bernard first recognized

A) plant stomata opening and closing to maintain homeostasis	B) chemical reactions of enzymes
C) separate fluids outside and inside the cell	D) feedback loops

Answer & Explanation Answer: A) plant stomata opening and closing to maintain homeostasis

Explanation:

Claud_Bernard1533194164.jpg image

Claude Bernard was a French physiologist, who first recognised plant stomata opening and closing to maintain homeostasis.

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Q:

Which of the following was most probably the first metal to be used in India?

A) copper	B) Gold
C) Siver	D) Iron

Answer & Explanation Answer: A) copper

Explanation:

The earliest historic evidences of use of metal are of Chalcolithic Age or Stone-Copper Age, which covered the period from 1800 - 800 BC. This period was by the use of Copper as well as stone.

Hence, the first metal to be used in India is Copper.

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Filed Under: Indian History
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Q:

First geothermal power plant in India?

A) Chattisgarh	B) Telangana
C) Andhra Pradesh	D) Uttar Pradesh

Answer & Explanation Answer: A) Chattisgarh

Explanation:

Chattisgarh State government has granted permission for the installation of a Geothermal Power Plant at Tattapani area of the Balrampur district to the NTPC and it is the first geothermal power plant in India.

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Filed Under: Indian Geography
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Q:

Anil purchases two books for Rs.100. He sells first at loss of 5% and second al 20% profit. If he gets Overall profit of 5% then what is cost of first book?

A) 58	B) 60
C) 55	D) 45

Answer & Explanation Answer: B) 60

Explanation:

-5-----------------------5-------------------20

5-(-5) = 10

20-5= 15

Ratio of cost price of book1 and book2 = 3:2

Then cost price of book 1 is given by

(3/5) x 100 = Rs. 60.

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Filed Under: Profit and Loss
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