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Q:

Prabhas is twice as good a workman as Rana and finishes a piece of work in 3 hours. In how many hours they together could finish that piece of work?

A) 3 hrs B) 3.5 hrs
C) 2.5 hrs D) 2 hrs
 
Answer & Explanation Answer: D) 2 hrs

Explanation:

Given Prabhas is twice as good a workman as Rana.

Prabhas finishes the work in 3 hrs

=> Rana finishes the work in 6 hrs.

Number of hours required together they could finish the work

= 3 x 6 / 3 + 6

= 18/9

= 2 hrs.

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Filed Under: Time and Work
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Analyst , Bank Clerk , Bank PO

6 5205
Q:

What is the 2017 theme of International Day for Biodiversity (IDB)  ?

A) Biodiversity and Sustainable Tourism B) Invasive Alien Species
C) Biodiversity and Agriculture D) Convention on Biological Diversity
 
Answer & Explanation Answer: A) Biodiversity and Sustainable Tourism

Explanation:

The International Day for Biological Diversity (IDB) is observed every year on May 22 to increase understanding and awareness of biodiversity issues. The 2017 theme “Biodiversity and Sustainable Tourism” provides an opportunity to raise awareness and action towards the important contribution of sustainable tourism both to economic growth and to the conservation and sustainable use of biodiversity.

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Filed Under: Important Days and Years
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Bank Clerk

4 5204
Q:

In which of the following state Bandipur National Park is located?

A) Karnataka B) Andhra Pradesh
C) Himachal Pradesh D) Madhya Pradesh
 
Answer & Explanation Answer: A) Karnataka

Explanation:

Bandipur National Park is located in the state of Karnataka.

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Filed Under: Indian Geography
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Bank PO , Database Administration , IT Trainer

7 5203
Q:

A Woman’s downstream swimming rate is thrice of her upstream swimming rate. If she covers 12 km upstream in 2.5 hours, what distance she will cover in 5 hours downstream?

 

A) 72 km B) 36 km
C) 56 km D) 42 km
 
Answer & Explanation Answer: A) 72 km

Explanation:

Rate of her upstream = 12/2.5 = 4.8 km/hr

Then, ATQ

Rate of downstream = 4.8 x 3 = 14.4 km/hr

 

Hence, the distance she covers downstream in 5 hrs = 14.4 x 5 = 72 kms.

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Filed Under: Boats and Streams
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Analyst , Bank Clerk , Bank PO

17 5202
Q:

Two boxes contain 4 and 16 balls respectively. Two balls in the first box and four in the second, are black. If a box is chosen randomly and two balls are drawn at random from it, what is the
probability that at least one ball is black if the ball is not replaced?

A) 11/20 B) 43/120
C) 77/120 D) 9/20
 
Answer & Explanation Answer: C) 77/120

Explanation:

At least one black can be chosen in two ways from each box:
Now, probability of choosing at least one black ball from first box 

= 1/2 × [ (2C1× 2C1)/4C2 + 2C2/ 4C2 ]= 5/12

Probability of choosing at least one black ball from 2nd box
= 1/2 × [(4C1×12C1)/16C2 + 4C2/ 16C2] = 9/40

Final probability

= 5/12 + 9/40 = (50 + 27)/120 = 77/120

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

5 5200
Q:

The mean of a distribution is 15 and the standard deviation is 5. What is the value of the coefficient variation?

A) 16.66% B) 66.66%
C) 33.33% D) 100%
 
Answer & Explanation Answer: C) 33.33%

Explanation:
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Filed Under: Probability
Exam Prep: Bank Exams

11 5199
Q:

In the question two statements are given, followed by two conclusions, I and II. You have to consider the statements to be true even if it seems to be at variance from commonly known facts. You have to decide which of the given conclusions, if any, follows from the given statements.


Statement 1 : No squares are rectangles.
Statement 2 : All rectangles are triangles.


Conclusion I : Some triangles are squares.
Conclusion II : Some triangles are rectangles.

A) Only conclusion I follows B) Only conclusion II follows
C) Both I and II follow D) Neither I nor II follows
 
Answer & Explanation Answer: B) Only conclusion II follows

Explanation:
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Filed Under: Statement and Conclusions
Exam Prep: Bank Exams

0 5199
Q:

Thermal energy is caused by the motion of

A) atoms B) molecules
C) Both A & B D) None of the above
 
Answer & Explanation Answer: C) Both A & B

Explanation:

Thermal energy is caused by the motion of atoms and molecules in the matter.

Thermal_energy_is_caused_by_the_motion_of1556262535.jpg image

 

  1. Thermal energy is an example of kinetic energy, as it is due to the motion of particles, with motion being the key.
  2. Thermal energy results in an object or a system having a temperature that can be measured.
  3. Thermal energy can be transferred from one object or system to another in the form of heat.
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Filed Under: General Science
Exam Prep: CAT , Bank Exams , AIEEE
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3 5196