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Q:

At the university entrance exam, a candidate is admitted according to whether he has passed or failed the test. Of the candidates who are really capable, 80 % pass the test and of the incapable, 30 % pass the test. Given that 40 % of the candidates are really capable, then the proportion of the really capable students who can pass the test to the total students who can pass is about ?

A) 11/24 B) 1/5
C) 16/25 D) 6/5
 
Answer & Explanation Answer: C) 16/25

Explanation:

If there are total 100 candidates,
40 candidates are really capable and
60 candidates are incapable.
Of the candidates who are really capable = 80%
40*(80/100)=32 pass the test and
of the incapable= 30%
60*(30/100)=18 pass the test.
Total candidates who passed the test = 32+18 = 50
The proportion of the really capable students who can pass the test to the total students who can pass = 32/50 = 16/25.

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Filed Under: Ratios and Proportions
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5 6516
Q:

If a trader sold two cars each at Rs. 404415 and gains 15% on the first and loses 15% on the second, then his profit or loss percent on the whole is ?

A) 1.44 % B) 2.02 %
C) 1.04 % D) 2.25 %
 
Answer & Explanation Answer: D) 2.25 %

Explanation:

SP of each car is Rs. 404415, he gains 15% on first car and losses 15% on second car.

In this case, there will be loss and percentage of loss is given by = [(profit%)(loss%)]/100
= (15)(15)/100 % = 2.25%
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Filed Under: Profit and Loss
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4 6515
Q:

Heat transfer horizontally within the atmosphere is called

A) Convection B) Advection
C) Conduction D) Absorption
 
Answer & Explanation Answer: B) Advection

Explanation:
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Filed Under: General Science
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8 6514
Q:

A sum of Rs. 4,300 is distributed among M, N and O, such that M receives 25% more than N and N receives 25% less than O. What is O’s share in the amount?

A) 1564 B) 1600
C) 1632 D) 1714
 
Answer & Explanation Answer: B) 1600

Explanation:

Let O's share = Rs. P

=> N's share = 75100 x P = 3P4

M's share = 54 x 3P4 = 15P16

15P16 + 3P4 + P = 4300=> P = 4300 x 1643 = 1600 

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Filed Under: Partnership
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14 6513
Q:

Which type of forests occupies the highest percentage of area in India  ?

A) Savanna & desert vegetation B) Tropical deciduous
C) Tropical Rainforests D) Equatorial evergreen
 
Answer & Explanation Answer: B) Tropical deciduous

Explanation:

Tropical Deciduous Forests: They are also called the “Monsoon forests”. They grow in the areas with annual rainfall of 70-200 cm. Sandal wood, Shisam, Mahua, Sal, Teak and Bamboo are important species of trees. Moist deciduous and the dry deciduous forests are two major categories of these forests.

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Filed Under: Indian Geography
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32 6512
Q:

The percentage of irrigated land in India is about

A) 66% B) 35%
C) 71% D) 22%
 
Answer & Explanation Answer: B) 35%

Explanation:

According to World Bank Indicator India - Land use:

      • Agriculture Land - 1797090 sq. Km (about 60.4%). 
      • Forest Area - 677598 sq. Km. (about 22.08%). 
      • Agriculture Irrigated land - 35 %.



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Filed Under: Indian Geography
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16 6510
Q:

Which of the following is a true statement about Intranet and Internet ?

A) Encryption is necessary B) They use similar protocol
C) Speed is slow D) They use the same protocol
 
Answer & Explanation Answer: D) They use the same protocol

Explanation:
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Filed Under: Computer
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16 6503
Q:

Sriram was conducting an experiment in which the average of 11 observations came to be 92, while the average of first five observations was 89, and that of the last five was 86. What was the measure of the 6th observation ? 

A) 134 B) 137
C) 139 D) 141
 
Answer & Explanation Answer: B) 137

Explanation:
This can be done as,
 
(11 × 92)  -  (5 × 89)  -  (5 × 86) 
 
= 1012- 445 - 430 = 137
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Filed Under: Average
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11 6502