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Q:

World Suicide Prevention Day (WSPD) is observed every year on _______

A) 1 September	B) 7 September
C) 9 September	D) 10 September

Answer & Explanation Answer: D) 10 September

Explanation:

World Suicide Prevention Day (WSPD) is an awareness day celebrated on 10 September every year, keeping in mind the end goal to give overall commitment and action to anticipate suicides, with various activities around the world since 2003.

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Filed Under: Important Days and Years
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Q:

Water flows into a tank which is 200 m long and 150 m wide, through a pipe of cross-section (0.3m x 0.2m) at 20 km/h. In what time will the water level be 12m ?

A) 200 hrs	B) 240 hrs
C) 300 hrs	D) 270 hrs

Answer & Explanation Answer: C) 300 hrs

Explanation:

Volume of water collected in the tank in 1 hour

⇒ (0.3 × 0.2 × 20km × 1000mts) = 1200 m cubic

If after t hours, the water is at height of 12m,

1200t=200×150×12

⇒ t = 300 Hours.

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Filed Under: Pipes and Cistern
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Q:

Nine different letters of alphabet are given, words with 5 letters are formed from these given letters. Then, how many such words can be formed which have at least one letter repeated ?

A) 43929	B) 59049
C) 15120	D) 0

Answer & Explanation Answer: A) 43929

Explanation:

Number of words with 5 letters from given 9 alphabets formed = $9^{5}$

Number of words with 5 letters from given 9 alphabets formed such that no letter is repeated is = $9 P_{5}$

Number of words can be formed which have at least one letter repeated = $9^{5} - 9 P_{5}$

= 59049 - 15120

= 43929

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Filed Under: Permutations and Combinations
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Q:

China and Pakistan air forces have launched _________ joint air exercise in China.

A) Black Flag	B) Desert Eagle
C) Red Flag	D) Shaheen

Answer & Explanation Answer: D) Shaheen

Explanation:

The air forces of China and Pakistan began a joint training exercise SHAHEEN and deployed their latest fighter jets and AWACS aircraft.

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Filed Under: World Geography
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Q:

The length, breadth and height of a room are in the ratio 7:3:1. If the breadth and height are doubled while the length is halved, then by what percent the total area of the 4 walls of the room will be increased ?

A) 90%	B) 88%
C) 85%	D) 84%

Answer & Explanation Answer: A) 90%

Explanation:

Let length, breadth and height of the room be 7, 3, 1 unit respectively.

Area of walls = 2(l+b)xh = 2(7+3)x1 = 20 sq. unit.

Now, length, breadth and height of room will become 3.5, 6 and 2 respectively.

Area of walls = 2(l+b)xh = 2(3.5+6)x2 = 38 sq. unit.

% Increase in the area of walls = (38-20)x100/20 = 90%.

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Filed Under: Area
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Q:

Technology giant Microsoft's India-born CEO ___________ has written his first book "Hit Refresh".

A) Satya Nadella	B) Indra Nooyi
C) Kiran Mazumdar	D) Sundar Pichai

Answer & Explanation Answer: A) Satya Nadella

Explanation:

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Filed Under: Books and Authors
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Q:

Manish completes a work in 20 days. After 8 days Sriram joined the work. In how many days will the work be completed ?

Statements :

I. Sriram takes twice the time than Manish to complete the work.
II. Sriram completes half the work in 15 days.

A) Statement I alone is sufficient to answer the question	B) Statement II alone is sufficient to answer the question
C) Either the statements I & II is sufficient to answer the question	D) Neither the statements I & II is sufficient to answer the question

Answer & Explanation Answer: C) Either the statements I & II is sufficient to answer the question

Explanation:

From statement I,

Time taken by Sriram to complete the work = 40 days

From statement II,

Time taken by Sriram to complete the wok = 30 days

So from both either by statement I or statement II we can find the time to complete the work.

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Filed Under: Statement and Assumptions
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Q:

The difference between circumference and semidiameter of a circle is 37 cm. What is the diameter of the circle ?

A) 18 cm	B) 12 cm
C) 16 cm	D) 14 cm

Answer & Explanation Answer: D) 14 cm

Explanation:

circumference of a circle = 2 $π$ r

=> 2 × 22/7 × r – r = 37

=> 37/7 × r = 37

=> r = 7 cm.

Diameter D = 2r = 7×2 = 14 cm.

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Filed Under: Area
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