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Q:

If the average height of boys in a hall is 180 cm and that of girls is 150 cm. If the average height of the gathering is 165 cm, then find the number of girls present in the hall if the number of boys present in the hall are 78 ?

A) 56	B) 64
C) 87	D) 78

Answer & Explanation Answer: D) 78

Explanation:

Using Trial and error method,

we get the number of girls in the hall = 78

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Filed Under: Average
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Q:

Rajeev's age is four more than the age of Shilpa. The age of Shilpa can be obtained by subtracting four times her age 4 years ago from the four times her age after 4 years. What was Rajeev's age before 4 years ?

A) 36 years	B) 28 years
C) 32 years	D) 40 years

Answer & Explanation Answer: C) 32 years

Explanation:

Let Shilpa's present age is p years

According to question,

p = 4(x+4) – 4(x–4)

p = 4x+16 – 4x+16

p = 32

Shilpa's present age = 32 years

Rajeev is four years older than Shilpa

=> Shilpa's present age = Rajeev's age 4 years before.

=> Rajeev's age 4 years before = 32 years.

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Filed Under: Problems on Ages
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Q:

The symbols used in an assembly language are called ?

A) Assembler	B) Mnemonics
C) Codes	D) All of the above

Answer & Explanation Answer: B) Mnemonics

Explanation:

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Filed Under: Computer
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Q:

Priya can do a work in 16 days. In how many days will the work be completed by Sai, if the efficiency of Sai is 60% more than that of Priya ?

A) 8 days	B) 12 days
C) 14 days	D) 10 days

Answer & Explanation Answer: D) 10 days

Explanation:

Ratio of efficiencies of Priya and Sai is

Sai : Priya = 160 : 100 = 8 : 5

Given Priya completes the work in 16 days

Let number of days Sai completes the work be 'd'

=> 5×16 = 8×d

d = 10 days.

Therefore, number of days Sai completes the work is 10 days.

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Filed Under: Time and Work
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Q:

Uma sold an article for 3400 and got a profit of 25%. If he had sold the article for Rs. 3265. How much profit% would Uma have got ?

A) 22%	B) 27%
C) 20%	D) 18%

Answer & Explanation Answer: C) 20%

Explanation:

Given

125% ---- 3400

=> 100% ---- ?

=> ? = 3400x100/125 = 2720

=> Cost price of the article = Rs. 2720

Profit when article sold at Rs. 3265 = 3265 - 2720 = 545

Hence, Profit% = Gain x 100/cost price

=> P% = 545 x 100/2720

=> P% = 20%

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Filed Under: Profit and Loss
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Q:

60 percent of 2/7 of three-fourth of a number is 2664. What is the number ?

A) 20720	B) 21352
C) 25421	D) 24150

Answer & Explanation Answer: A) 20720

Explanation:

Let N be the required number.

=> $\frac{60}{100} x \frac{2}{7} x \frac{3}{4} x N = 2664$

=> N = 2664x2x7x5/9

=> N = 20720.

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Filed Under: Percentage
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Q:

Which Bank has bagged the 'Best Bank' award among small banks ?

A) Karur Vysya Bank	B) Kotak Mahindra Bank
C) BOI Bank	D) Karnataka Bank

Answer & Explanation Answer: D) Karnataka Bank

Explanation:

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Filed Under: General Awareness
Exam Prep: Bank Exams , CAT
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Q:

What approximate value will come in place of question mark (?) in the following question ?

(49.001)² = ?

A) 2500	B) 2400
C) 2600	D) 2300

Answer & Explanation Answer: B) 2400

Explanation:

Given (49.001)² = ?

=> =~ 49 x 49

=~ 2401

=~ 2400

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Filed Under: Mathematical Operations
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