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Q:

Can you slove this Maths Puzzle?

maths_puzzle1537500715.jpg image

A) 12 B) 6
C) 3 D) 1
 
Answer & Explanation Answer: B) 6

Explanation:

In the given puzzle, the logic behind is

9 = 72 => 9 x 8 = 72

8 = 56 => 8 x 7 = 56

7 = 42 => 7 x 6 = 42

6 = 30 => 6 x 5 = 30

5 = 20 => 5 x 4 = 20

 

Similarly,

4 = 12 => 4 x 3 = 12

3 = 6 => 3 x 2 = 6

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Filed Under: Math Puzzles
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19 6144
Q:

Prithvi spent Rs.89,745 on his college fees, Rs 51,291 on Personality Development Classes, and the remaining 27% of the total amount he had as cash with him. What was the total amount?

A) Rs.1,85,400 B) Rs.1,89,600
C) Rs.1,91,800 D) Rs.1,93,200
 
Answer & Explanation Answer: D) Rs.1,93,200

Explanation:
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Filed Under: Quantitative Aptitude - Arithmetic Ability
Exam Prep: Bank Exams
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19 6143
Q:

Chola Empire was divided into ____

A) Mandalams, Nadu, Avanti & Kurram B) Mandalams, Nadu, Malkhand & Kurram
C) Avanti, Nadu, Malkhand & Kurram D) Mandalams, Nadu,Kurram & Valanadu
 
Answer & Explanation Answer: D) Mandalams, Nadu,Kurram & Valanadu

Explanation:
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Filed Under: Indian History
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26 6134
Q:

Ralph Samuelson was only 18 when he invented this sporting item in 1922. What was that?

A) Golf tee B) Motorboat
C) Water skis D) Hang glider
 
Answer & Explanation Answer: C) Water skis

Explanation:
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Filed Under: Inventions

7 6133
Q:

Today __________ are seen as personal accessory - portable, powerful and simple to operate.

 

A) e-mail B) e-business  
C) e-content   D) Computers
 
Answer & Explanation Answer: D) Computers

Explanation:
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Filed Under: Computer
Exam Prep: Bank Exams

2 6132
Q:

Which Constitutional Amendment Act gave constitutional recognition to municipalities?

 

A) 72nd Constitutional Amendment Act   B) 73rd Constitutional Amendment Act
C) 74th Constitutional Amendment Act D) 75th Constitutional Amendment Act
 
Answer & Explanation Answer: C) 74th Constitutional Amendment Act

Explanation:
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Filed Under: Indian Politics
Exam Prep: Bank Exams

0 6128
Q:

South West Monsoon generates in ___.

 

A) Arabain Sea B) Indian Ocean
C) Bay of Bengal D) Himalayas
 
Answer & Explanation Answer: B) Indian Ocean

Explanation:
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Filed Under: Indian Geography
Exam Prep: Bank Exams

2 6127
Q:

A tennis ball machine serves a ball vertically into the air from a height of 2 feet, with an initial speed of 110 feet per second. After how many seconds does the ball attain its maximum height?

A) 2.87 sec B) 3.44 sec
C) 4.65 sec D) 5.41 sec
 
Answer & Explanation Answer: B) 3.44 sec

Explanation:

It is launched vertically with an initial speed of 110 ft/sec.

It will reach maximum height when the speed drops to 0.

Vo=110 feet per second 

ho=2 feet 

So, h(t) = -16t^2 +110t +2 

Take the derivative: h'(t) = 110 -32t 

The maximum height will be at the inflection when the derivative crosses the x-axis, then h'(t)=0. 

So, set h'(t)=0 and solve for t: 

0 = 110 -32t 

-110 = -32t 

t=3.4375 

t=3.44 seconds.

 

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Filed Under: Physics
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3 6125