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Q:

Prabhas is twice as good a workman as Rana and finishes a piece of work in 3 hours. In how many hours they together could finish that piece of work?

A) 3 hrs	B) 3.5 hrs
C) 2.5 hrs	D) 2 hrs

Answer & Explanation Answer: D) 2 hrs

Explanation:

Given Prabhas is twice as good a workman as Rana.

Prabhas finishes the work in 3 hrs

=> Rana finishes the work in 6 hrs.

Number of hours required together they could finish the work

= 3 x 6 / 3 + 6

= 18/9

= 2 hrs.

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Filed Under: Time and Work
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Q:

In how many different ways can the letters of the word 'THERAPY' be arranged so that the vowels always come together?

A) 720	B) 1440
C) 1800	D) 3600

Answer & Explanation Answer: B) 1440

Explanation:

Given word is THERAPY.

Number of letters in the given word = 7

Number of vowels in the given word = 2 = A & E

Required number of different ways, the letters of the word THERAPY arranged such that vowels always come together is

6! x 2! = 720 x 2 = 1440.

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Filed Under: Permutations and Combinations
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Q:

While selling a router, a shopkeeper gives a discount of 15%. If he gives a discount of 20%, he earns Rs. 51 less as profit. What is the original marked price of the router?

A) Rs. 1000	B) Rs. 1020
C) Rs. 1040	D) Rs. 980

Answer & Explanation Answer: B) Rs. 1020

Explanation:

Let the marked price of the router be Rs. P

From the given data,

$P x \frac{85}{100} - P x \frac{80}{100} = 51 P x \frac{5}{100} = 51 \Rightarrow P = \frac{5100}{5} = 1020$

Hence, the original marked price of the router is Rs. 1020.

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Filed Under: Profit and Loss
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Q:

In how many different ways the letters of the word 'TRANSFORMER' can be arranged such that 'N' and 'S' always come together?

A) 112420	B) 85120
C) 40320	D) 1209600

Answer & Explanation Answer: D) 1209600

Explanation:

Given word is TRANSFORMER.

Number of letters in the given word = 11 (3 R's)

Required, number of ways the letters of the word 'TRANSFORMER' can be arranged such that 'N' and 'S' always come together is

10! x 2!/3!

= 3628800 x 2/6

= 1209600

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Filed Under: Permutations and Combinations
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Q:

Homology is evidence of

A) Common ancestry	B) Divergent evolution
C) Punctuated evolution	D) Convergent evolution

Answer & Explanation Answer: A) Common ancestry

Explanation:

In biology, Homology is defined as any characteristic of biological organisms that is derived from a common ancestor.

Hence, Homology is evidence of Common ancestry.

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Filed Under: General Science
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Q:

Who is responsible to pay back all debts?

A) government	B) spouse
C) Both A & B	D) None of the above

Answer & Explanation Answer: A) government

Explanation:

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Filed Under: Bank Interview
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Q:

Early examples of art photography often imitated

A) the brush strokes of Renaissance painters	B) Leonardo da Vinci's painting of The Last Supper
C) the narrative form of painting	D) the Dada photographic collages of Hannah Hoch

Answer & Explanation Answer: C) the narrative form of painting

Explanation:

The Story telling or The narrative form of paintings were the early examples of art photography which were often imitated.

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Filed Under: Indian History
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Q:

On Rs. 3500 invested at a simple interest rate of 7 per cent per annum, Rs. 500 is obtained as interest in certain years. In order to earn Rs. 800 as interest on Rs. 4900 in the same number of years, what should be the rate of simple interest?

A) 8%	B) 7.5%
C) 9%	D) 8.5%

Answer & Explanation Answer: A) 8%

Explanation:

From the given data,

3500x7xt/100 = 500

=> t = 100/49 years

Now, in the second case

The interest per year = 49/100 x 800 = 392

=> 4900 x 1 x r/100 = 392

=> r = 8%

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Filed Under: Simple Interest
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