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Q:

Which of the following is NOT considered as a Greeen House Gas?

A) Methane B) Carbon dioxide
C) Nitrous oxide D) Oxygen
 
Answer & Explanation Answer: D) Oxygen

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Q:

Name the malicious software that affected various computers recently in may 2017, and restricted users to access it until a ransom is paid to unlock it  ?

A) Bitcoinware B) Captiveware
C) Pay-offware D) Ransomware
 
Answer & Explanation Answer: D) Ransomware

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Q:

Who of the following was the first scientific geographer who ascertained the length of equator on sound principles?

A) Herodotus B) Hecataeus
C) Anaximander D) Eratosthenes
 
Answer & Explanation Answer: D) Eratosthenes

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Q:

Which among the following states leads in Handloom and Handicrafts clusters in India?

A) Maharastra B) West Bengal
C) Uttar Pradesh D) Odisha
 
Answer & Explanation Answer: C) Uttar Pradesh

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Filed Under: Indian Geography
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Q:

Which company's name in Italian means 'to roll'?

A) Vauxhall B) Honda
C) Volvo D) Michelin
 
Answer & Explanation Answer: C) Volvo

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Q:

Which of the statements given below are correct?

A) Rafael Nadal won the Tennis 2017 Australian Open Men's Singles.

B) In 2017, Virat Kohli captained the IPL team Royal Challengers Bangalore.

C) Serena Williams won the Table Tennis 2017 ITTF World Tour Grand Finals Women's Singles

 

A) Only A B) Only B
C) Both A and C D) None of these
 
Answer & Explanation Answer: B) Only B

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Q:

In order to give impetus to agriculture which of the following states has launched Contract Farming Scheme?

A) Jammu & Kashmir B) Orissa
C) West Bengal D) Haryana
 
Answer & Explanation Answer: D) Haryana

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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
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