Q:

If the Arithmetic mean of 7, 5, 13, x and 9 is 10, then the value of x is

A) 10 B) 12
C) 14 D) 16
 
Answer & Explanation Answer: D) 16

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Q:

The sum of ages of 4 children born at intervals of 4 years each is 60. What is the age of the youngest child?

A) 7 B) 9
C) 10 D) 12
 
Answer & Explanation Answer: B) 9

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Q:

The third proportional of two numbers 4 and 28 is _______.

A) 52 B) 56
C) 84 D) 196
 
Answer & Explanation Answer: D) 196

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Filed Under: Ratios and Proportions
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Q:

Find out the odd word/letters/number/number pair from the given alternatives.

A) 5306 B) 2147
C) 4205 D) 4308
 
Answer & Explanation Answer: D) 4308

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Q:

The amount received at 10% per annum compound interest after 3 yrs is Rs 10,648. What was the principal (in Rs)?

A) 8000 B) 9000
C) 8500 D) 7500
 
Answer & Explanation Answer: A) 8000

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Filed Under: Compound Interest
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Q:

What is the measure of the central angle of the sector whose area is 462 sq cm and radius of the circle is 21 cm?

A) 90° B) 60°
C) 30° D) 120°
 
Answer & Explanation Answer: D) 120°

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Q:

Find the number of triangles in the figure.

A) 12 B) 20
C) 22 D) 24
 
Answer & Explanation Answer: C) 22

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Filed Under: Image Analysis
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Q:

Which one of the following cell organelles mainly functions as storehouse of digestive enzymes?

A) Desmosome B) Ribosome
C) Lysosome D) Vacuoles
 
Answer & Explanation Answer: C) Lysosome

Explanation:

Lysosome is found in nearly all types of eukaryotic cells (cells with a clearly defined nucleus) and is responsible for the digestion of macromolecules, old cell parts, and microorganisms. Each lysosome is surrounded by a membrane that maintains an acidic environment within the interior via a proton pump. Lysosomes contain a wide variety of hydrolytic enzymes (acid hydrolases) that break down macromolecules such as nucleic acids, proteins, and polysaccharides. So, they are known as storehouse of digestive enzymes.

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