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Q:

3.2% of 500 × 2. 4% of ? = 312

A) 812.5	B) 829.75
C) 749.85	D) 799.5

Answer & Explanation Answer: A) 812.5

Explanation:

$Given 3.2 % of 500 \times 2 . 4 % of ? = 312 Then, 3.2 x \frac{500}{100} x 2.4 x \frac{?}{100} = 312 16 x \frac{2.4 x ?}{100} = 312 \frac{9.6 x ?}{25} = 312 9.6 x ? = 7800 ? = \frac{7800}{9.6} ? = 812.5$

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Filed Under: Percentage
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Q:

If $9 = 63 8 = 48 7 = 35$

Then 4 = ?

A) 4	B) 8
C) 12	D) 16

Answer & Explanation Answer: B) 8

Explanation:

Here given that 9 = 63, 8 = 48, 7=35, ...

The given question follows a pattern that

9 x (9 - 2) = 9 x 7 = 63

8 x (8 - 2) = 8 x 6 = 48

7 x (7 - 2) = 7 x 5 = 35

Similarly, 4 x (4 - 2) = 4 x 2 = 8.

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Q:

$\frac{1}{2}$ as a percentage?

A) 50%	B) 5%
C) 0.5%	D) 0.05%

Answer & Explanation Answer: A) 50%

Explanation:

1/2 as a percentage means

1/2 = 0.5 in decimal

Now, in percentage means 0.5 x 100% = 50%.

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Q:

Which of the following has the highest frequency?

A) Cosmic rays	B) X-rays
C) Radio waves	D) Microwaves

Answer & Explanation Answer: A) Cosmic rays

Explanation:

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Q:

What word in the English language is always spelled incorrectly?

A) Schezwan	B) Yorker
C) Incorrectly	D) Psycologically

Answer & Explanation Answer: C) Incorrectly

Explanation:

INCORRECTLY is the only English word which is always spelled incorrectly.

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Q:

Wind and solar energy are examples of

A) Non renewable	B) Renewable
C) Unsustainable	D) Limited

Answer & Explanation Answer: B) Renewable

Explanation:

Many types of renewable energy resources such as wind and solar energy are constantly replenished and will never run out.

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Filed Under: Physics
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Q:

What time will it be 18 hours from now in India, if in the USA it is 4:15 AM?

(Hint : IST = US + 9:30 hrs)

A) 1:45 in the afternoon	B) 7:45 in the evening
C) 7:45 in the next morning	D) 1:45 in the next morning

Answer & Explanation Answer: C) 7:45 in the next morning

Explanation:

We know that the time difference between India and USA is 9 hrs 30 min.

India is 9:30 hrs ahead of USA.

Time in India = 4:15 + 9:30 = 13:45 PM.

Required Time after 18 hrs = 13:45 + 18 hrs = 7:45 AM.

Hence it is 7:45 AM on the next morning.

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Q:

How many squares do you see?

squares11523426304.jpg image

A) 44	B) 45
C) 46	D) 50

Answer & Explanation Answer: B) 45

Explanation:

Number of squares in the given figure is

16 + 9 + 19 + 1 = 45.

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Filed Under: Math Puzzles
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