Analyst Questions


Q:

A bag contains 4 red and 3 black balls. A second bag contains 2 red and 4 black balls. One bag is selected at random. From the selected bag, one ball is drawn. Find the probability that the ball drawn is red.

A) 23/42 B) 19/42
C) 7/32 D) 16/39
 
Answer & Explanation Answer: B) 19/42

Explanation:

A red ball can be drawn in two mutually exclusive ways

 (i) Selecting bag I and then drawing a red ball from it.

 

(ii) Selecting bag II and then drawing a red ball from it.

 

Let E1, E2 and A denote the events defined as follows:

E1 = selecting bag I,

E2 = selecting bag II

A = drawing a red ball

Since one of the two bags is selected randomly, therefore 

P(E1) = 1/2  and  P(E2) = 1/2

Now, PAE1 = Probability of drawing a red ball when the first bag has been selected = 4/7

  PAE2  = Probability of drawing a red ball when the second bag has been selected = 2/6

 Using the law of total probability, we have 

 P(red ball) = P(A) = PE1×PAE1+PE2×PAE2 

 

                          = 12×47+12×26=1942

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Filed Under: Probability
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64 28448
Q:

Pointing to a woman, a man said, "Her father is the only son of my father." How is the man related to the woman?

A) Father B) Brother
C) Uncle D) Brother-in-law
 
Answer & Explanation Answer: B) Brother

Explanation:

The man said, "Her father is the only son of my father."

Then the woman's father and the man's is the same

=> The woman and the man are brother and sisters.

 

Hence, the man is the brother of the woman.

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Filed Under: Blood Relations
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58 28426
Q:

The Indus Valley Civilization was Non-Aryan because

A) It was Urban B) It has a pictographic script
C) It had an agricultural economy D) It extended up to the narmada Valley
 
Answer & Explanation Answer: A) It was Urban

Explanation:

The Indus Valley Civilization was Non-Aryan because it was Urban.

 

Harappan Civilization is also known as The Indus Valley Civilisation. It was a Bronze Age civilisation mainly in the northwestern regions of South Asia, extending from what today is northeast Afghanistan to Pakistan and northwest India.

 

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Filed Under: Indian History
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67 27948
Q:

Find the next number in the series

404, 415, 402, 413, 400, ?

A) 411 B) 421
C) 417 D) 414
 
Answer & Explanation Answer: A) 411

Explanation:

The given series 404, 415, 402, 413, 400, ? follows a pattern that,

404

404 + 11 = 415

415 - 13 = 402

402 + 11 = 413

413 - 13 = 400

400 + 11 = 411

 

Hence the next number in the given number series is 411.

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10 27539
Q:

Horse : Jockey :: Car : ?

A) Chauffeur B) Steering
C) Mechanic D) Brake
 
Answer & Explanation Answer: A) Chauffeur

Explanation:

A horse is driven by a jockey.

 

Similarly, a car is driven by a chauffeur.

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Filed Under: Analogy
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128 27491
Q:

52 C in a P?

Answer

52 C in a P represents 52 Cards in a Pack.


Similar to 


12 S of the Z 


5 C in an OF

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67 27297
Q:

What time will it be 18 hours from now in India, if in the USA it is 4:15 AM?

(Hint : IST = US + 9:30 hrs)

A) 1:45 in the afternoon B) 7:45 in the evening
C) 7:45 in the next morning D) 1:45 in the next morning
 
Answer & Explanation Answer: C) 7:45 in the next morning

Explanation:

We know that the time difference between India and USA is 9 hrs 30 min.

India is 9:30 hrs ahead of USA.

Time in India = 4:15 + 9:30 = 13:45 PM.

Required Time after 18 hrs = 13:45 + 18 hrs = 7:45 AM.

 

Hence it is 7:45 AM on the next morning.

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20 27269
Q:

In a certain office, 1/3 of workers are women, 1/2 of the women are married and 1/3 of the married women have children. If 3/4  of the men are married and 2/3  of the married men have children, what part of the workers are without children?

A) 5/18 B) 4/9
C) 11/18 D) 17/36
 
Answer & Explanation Answer: C) 11/18

Explanation:

Let the total number of workers be x. Then, 

 

Number of women = x/3 and number of men = x - x/3  = 2x/3

 

Number of women having children = x/18

 

Number of men having children = x/3

 

Number of workers having children = (x/18) + (x/3) = 7x/18

  

Therefore, workers having no children = x - 7x/18 = 11/18 of all workers.

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Filed Under: Arithmetical Reasoning
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64 27235