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Q:

The diameter of the driving wheel of a bus is 140 cm. How many revolution, per minute must the wheel make in order to keep a speed of 66 kmph ?

A) 150 B) 250
C) 350 D) 550
 
Answer & Explanation Answer: B) 250

Explanation:

Circumference = No.of revolutions * Distance covered

 

Distance to be covered in 1 min. = (66 X1000)/60 m = 1100 m.
Circumference of the wheel = 2 x (22/7) x 0.70 m = 4.4 m.
Number of revolutions per min. =(1100/4.4) = 250.

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Filed Under: Area
Exam Prep: Bank Exams
Job Role: Bank PO

47 28968
Q:

Find the appropriate relation for quantity1 and quantity2 in the following question:

Quantity 1: In an examination, Ankita scored 35 marks less than Puneeta. Puneeta scored 65 more marks than Meenakshi. Rakhi scored 115 marks, which is 20 marks more than Meenakshi's. Simpy scored 108 marks less than the maximum marks of the test. What approximate percentage of marks did Simpy score in the examination, if she got 67 marks more than Ankita?

Quantity 2: The length of a rectangle is increased by 60%. By what percent would the width have to be decreased to maintain the same area?

A) Quantity1 < Quantity2 B) Quantity1 ≤ Quantity2
C) Quantity1 ≥ Quantity2 D) Quantity1 > Quantity2
 
Answer & Explanation Answer: D) Quantity1 > Quantity2

Explanation:

Quantity1-
Rakhi’s marks= 115
Meenakshi’s marks= 115 - 20 = 95
Puneeta’s marks= 95 + 65= 160
Ankita’s marks=160 - 35= 125
Simpy’s marks= 125+ 67= 192
Total maximum marks= 192 + 108= 300
Required percentage marks of Simpy
= 192300×100=64%
Quantity2-
Let length and breadth be 100.

After increase in length it become 160, then
reduction in breadth be ‘x’
Now, 160*x= 100*100
Hence, x = 10000160=62.5

100-62.5=37.5%

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Filed Under: Quantitative Aptitude - Arithmetic Ability
Exam Prep: Bank Exams , GATE
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2 28953
Q:

If goods be purchased for Rs.450 and 1/3 is sold at a loss of 10%. At what gain % should the remainder is sold to has to gain 20% on the whole transaction?

A) 35% B) 28%
C) 22% D) 19%
 
Answer & Explanation Answer: A) 35%

Explanation:

Given the cost price of the articles = Rs. 450

To get overall 20% gain,

Total Selling Price = (20/100) x 450 = 540


One third of the CP = 1/3 x 450 = Rs. 150

But given 1/3 of articles are sold at 10% loss

S.P of 1/3 of articles = 90% of 150

= 90 x 150/100 = 135

 

Then, S.P on remaining 2/3 goods must be

= 450 - 135 = 405 ...........(1)

CP on remaining goods

= 2/3 x 450 = 300 ............(2)


Profit = SP - CP = 405 - 300 = 105


Profit %  = (105/300) x 100

= 35%.

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Filed Under: Profit and Loss
Exam Prep: AIEEE , Bank Exams , CAT
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45 28849
Q:

The inner circumference of a circular race track, 14 m wide, is 440 m. Find radius of the outer circle

A) 44 B) 22
C) 33 D) 84
 
Answer & Explanation Answer: D) 84

Explanation:

Let inner radius be r metres. Then, 2πr = 440 ; r = 440×744= 70 m.

Radius of outer circle = (70 + 14) m = 84 m.

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Filed Under: Area
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35 28826
Q:

The First Mechanical Computer Designed by Charles Babbage was called?

A) Super Computer B) Abacus
C) Calculator D) Analytical Engine
 
Answer & Explanation Answer: D) Analytical Engine

Explanation:

Computer was invented by Charles Babbage.

The First Mechanical Computer Designed by Charles Babbage, a British mathematician was called as Analytical Engine which resembles today's modern machines  between 1833 and 1871.

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Filed Under: Computer
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145 28817
Q:

Artists are generally whimsical. Some of them are frustrated. Frustrated people are prone to be drug addicts.

Based on these statements which of the following conclusions is true?

A) All frustrated people are drug addicts B) Frustrated people are whimsical
C) All drug addicts are artists D) Some artists may be drug addicts
 
Answer & Explanation Answer: D) Some artists may be drug addicts

Explanation:
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Filed Under: Statement and Conclusions
Exam Prep: Bank Exams , CAT , GATE , GRE
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44 28805
Q:

Smallest Taluk in Kerala State?

A) Kunnathur B) Eranad
C) Palakkad D) Alappuzha
 
Answer & Explanation Answer: A) Kunnathur

Explanation:

Kunnathur is the Smallest Taluk in Kerala State.

 

Smallest_Taluk_in_Kerala_State1557490637.jpg image 

 

Taluk :

 

In Kerala, the administrative divisions below the district are called Taluk. There are 77 Taluks in Kerala State.

 

Eranad is the Largest Taluk in Kerala State.

 

Palakkad is the Largest District in Kerala State.

 

Alappuzha is the Smallest District in Kerala State.

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Filed Under: Indian Geography
Exam Prep: CAT , Bank Exams , AIEEE
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46 28695
Q:

Is C2 Paramagnetic or Diamagnetic?

A) Paramagnetic B) Diamagnetic
C) Ferromagnetic D) Can't be determined
 
Answer & Explanation Answer: B) Diamagnetic

Explanation:

Paramagnetic Molecules ::

 

If the Electronic configuration of a molecule has any unpaired electrons, then that molecule is said to be Paramagnetic.

 

Diamagnetic Molecules ::

 

If the Electronic configuration of a molecule has only paired or spin paired electrons, then that molecule is said to be Diamagnetic.

 

Is_C2_Paramagnetic_or_Diamagnetic1556263140.jpg image 

 

Here the molecule C2 has all paired electrons in its electronic configuration. So C2 is Diamagnetic.

 

Whereas, B2 molecule has unpaired electrons. So B2 is Paramegnetic.

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Filed Under: Chemistry
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32 28683