Exams


Q:

There are 1650 students in a college. The difference between the number of boys and girls in the college is 400. What is the percentage of girls in the college ?

A) 49 B) 34
C) 43 D) 38
 
Answer & Explanation Answer: D) 38

Explanation:

Let no. of boys be 'B' and no. of girls be 'G'

Here from given data,

B + G = 1650 .....(1)

B - G = 400 .....(2)

From (1) & (2), we get

2B = 2050

=> B = 1025

=> G = 1650 - 1025 = 625

Hence, the % of girls = 625 x 100/1650

=> 38% (approx).

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Filed Under: Percentage
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4 6513
Q:

Calculate the number of bricks, each measuring 25 cm x 15 cm x 8 cm required to construct a wall of dimensions 10 m x 4 m x 5 m when 10% of its volume is occupied by concrete ?

A) 6000 B) 5400
C) 3800 D) 4700
 
Answer & Explanation Answer: A) 6000

Explanation:

Let 'B' be the nuber of bricks.

=> 10 x 4/100 x 5 x 90/100 = 25/100 x 15/100 x 8/100 x B

=> 10 x 20 x 90 = 15 x 2 x B

=> B = 6000

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Filed Under: Volume and Surface Area
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5 6511
Q:

10 boys can complete a work in 7 days and 10 girls take 14 days to complete the work. How many days will 5 boys and 10 girls take to complete the work ?

A) 13 days B) 10 days
C) 7 days D) 16 days
 
Answer & Explanation Answer: C) 7 days

Explanation:

1 boy's 1 day work = 1/70

1 girl's 1 day work = 1/140

(5 boys + 10 girls)'s 1 day work = (5/70 + 10/140) = (1/14 + 1/14) = 1/7

 

5 boys and 10 girls will complete the work in 7 days.

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Filed Under: Time and Work
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2 6511
Q:

Charminar is made up of which rock?

A) Limestone B) Marble
C) Granite D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:

Charminar was built at the center of the Hyderabad city in Telangana state, to commemorate the eradication of Plague by Mohammed Quli Qutb Shah in early 1500's. 

charminar_is_made_up_of_which_rock1542451710.jpg image 

It was built with Granite, imestone and Marble.

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Filed Under: General Science
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7 6510
Q:

What is the value of cosec 120°

A) 2/√3 B) 2
C) -2/√3 D) -2
 
Answer & Explanation Answer: A) 2/√3

Explanation:
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Filed Under: Simplification
Exam Prep: Bank Exams

7 6509
Q:

P.V. Sindhu defeated which player in the finals to win her maiden India Open Super Series title on 2 April 2017 ?

A) Wang Yihan B) Greysia Polii
C) Sung Ji-Hyun D) Carolina Marin
 
Answer & Explanation Answer: D) Carolina Marin

Explanation:

India’s P.V. Sindhu avenged her Rio Olympic final defeat to Spain’s Carolina Marin in an emphatic style with a straight game 21-19, 21-16 win in the women’s singles final of India Open Super Series at a packed Siri Fort Sports Complex on 2 April 2017.

– It is worth mentioning that Sindhu had lost to Marin the Rio Olympic women’s singles final. But she avenged her Olympic final defeat to Marin in an imperious fashion with a straight game. This was Sindhu’s first India Open Super Series title.

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Filed Under: Sports
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11 6508
Q:

What is the smallest number of ducks that could swim in this formation - two ducks in front of a duck, two ducks behind a duck and a duck between two ducks ?

A) 3 B) 5
C) 7 D) 9
 
Answer & Explanation Answer: A) 3

Explanation:
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Filed Under: Arithmetical Reasoning
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8 6507
Q:

Emphasize most nearly means

A) Accentuate B) Calculate
C) Justify D) Demain
 
Answer & Explanation Answer: A) Accentuate

Explanation:

Emphasize means giving special importance or worth giving attention to in speaking or writing.

Here in the options, Accentuate is most nearly means Emphasize.

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Filed Under: English
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6 6506