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Q:

A man and his son are in a terrible accident and are rushed to the hospital in critical care. The doctor looks at the boy and exclaims "I can't operate on this boy, he's my son!" How could this be?

Answer

This is only possible when that doctor is boy's mother.

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Subject: Logic Puzzles Exam Prep: AIEEE , Bank Exams , CAT , GATE , GRE , TOEFL
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Q:

The income and substitution effects account for

A) the upward sloping curve	B) the downward sloping curve
C) Both A & B	D) None of the above

Answer & Explanation Answer: B) the downward sloping curve

Explanation:

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Filed Under: Bank Interview
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Q:

A certain sum is invested for 2 years in scheme M at 20% p.a. compound interest (compounded annually), Same sum is also invested for the same period in scheme N at k% p.a. simple interest. The interest earned from scheme M is twice of that earned from scheme N. What is the value of k?

A) 7	B) 11
C) 9	D) 13

Answer & Explanation Answer: B) 11

Explanation:

Interest earned in scheme M =

$P [{(1 + \frac{20}{100})}^{2} - 1] = \frac{11 P}{25}$

Interest earned in scheme N =

$\frac{P x k x 2}{100} = \frac{P k}{50}$

Now, from the given data,

$\frac{11 P}{25} = 2 x \frac{P k}{50}$

k = 11

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Filed Under: Compound Interest
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Q:

Which of these is true of all simple machines?

A) these make work easier	B) work input > work output
C) Both A & B	D) None of the above

Answer & Explanation Answer: C) Both A & B

Explanation:

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Filed Under: Physics
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Q:

Which company was a monopoly during the gilded age?

A) Carnegie Steel	B) Microsoft
C) Allegheny Steel	D) AT&T

Answer & Explanation Answer: A) Carnegie Steel

Explanation:

Monopoly is an economic term that describes a single company or entity controlling one hundred percent of the supply of a particular product. Carnegie Steel is one of the argest monopoly of steel industry during the Gilded age.

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Filed Under: Indian History
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Q:

Which of the following is an example of secondary succession?

A) sedimentation on the bottom of drained lake	B) landscaping at a golf course
C) reforestation of the cedar forests of the northwest	D) scrub grasses growing on a newly exposed dune

Answer & Explanation Answer: C) reforestation of the cedar forests of the northwest

Explanation:

Secondary succession means in an ecosystem renewal of itself after all or a portion has been destroyed.

After a forest fire, the whole forest had destroyed but after that again renewal of that forest is also an example of secondary succession.

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Filed Under: General Science
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Q:

The galapagos finches are an excellent example of

A) Speciation	B) Isolation
C) Mating	D) None of the above

Answer & Explanation Answer: A) Speciation

Explanation:

The galapagos finches are an excellent example of speciation which means the formation of distinct species in the course of evolution.

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Filed Under: Animals and Birds
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Q:

Which clade does not include humans?

A) diapsids	B) craniates
C) synapsids	D) lobe fins

Answer & Explanation Answer: A) diapsids

Explanation:

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Filed Under: General Science
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