153
Q:

Today is Varun's birthday. One year, from today he will be twice as old as he was 12 years ago. How old is Varun today ?

A) 20 years B) 22 years
C) 25 years D) 27 years

Answer:   C) 25 years



Explanation:

Let Varun's age today = x years. 

Then, Varun's age after 1 year = (x + 1) years.

Therefore x + 1 = 2 (x - 12) =>  x + 1 = 2x - 24 =>  x = 25.

Q:

What is the reciprocal of a negative number?

Answer

The reciprocal of a negative number is always a negative number. So that the number and its reciprocal multiply to 1. 


 


All real numbers except 0 have reciprocals.

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0 16
Q:

Points that lie on the same line are called

A) Congruent B) Coplanar points
C) Collinear points D) None
 
Answer & Explanation Answer: C) Collinear points

Explanation:

Points that lie on the same line are called Collinear points. And that points lie on the same plane are called Coplanar points. 

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0 18
Q:

What is the distance around a circle called

Answer

The distance around a circle is called as Circumference. And that in the case of square or rectangle it is called as Perimeter.

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0 10
Q:

The process of collecting, organizing and analyzing data is called

A) Statistics B) Data collection
C) Probability D) Systematic evaluation
 
Answer & Explanation Answer: A) Statistics

Explanation:

The process of collecting, organizing and analyzing data is called Statistics.

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0 8
Q:

The complexity of linear search algorithm is

A) O(n2) B) O(n log n)
C) O(n) D) O(log n)
 
Answer & Explanation Answer: C) O(n)

Explanation:

The worst case complexity of linear search is O(n).

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0 84
Q:

With similar triangles the corresponding angles are equal.

A) TRUE B) FALSE
Answer & Explanation Answer: A) TRUE

Explanation:

The given statement about similar triangles is TRUE.


 


Similar Triangles Theorem :: Similar triangles are two triangles with corresponding angles of equal measure, and the ratios of their corresponding sides' lengths are equal.

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1 134
Q:

When is 99 more than 100?

Answer

A microwave.


Generally when you run a microwave for '99' it runs for 1 minute and 39 seconds. '100' runs for 1 minute.

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1 173
Q:

Negative plus a positive equals

A) negative B) positive
C) zero D) Can't be determined
 
Answer & Explanation Answer: D) Can't be determined

Explanation:

We know that a negative value plus a positive value always count backward and the sign depends on the bigger value sign.

When you are adding a negative number to a positive number, then the value counts backward and takes the sign of the biggest number.

 

For example::

Adding -5 and +2

-5 + 2 = -3 (big number is 5 and its sign is '-')

 

Adding -3 and  +5

+5 + (-3) = 5 - 3 = +2(big number is 5 and it has sign '+').  

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0 207