AIEEE Questions

Q:

What is the sum of all 3 digits number that can be formed using digits 0,1,2,3,4,5 with no repitition ?

A) 28450 B) 26340
C) 32640 D) 36450
 
Answer & Explanation Answer: C) 32640

Explanation:

We know that zero can't be in hundreds place. But let's assume that our number could start with zero.

 

The formula to find sum of all numbers in a permutation is

 

111 x no of ways numbers can be formed for a number at given position x sum of all given digits

 

No of 1 s depends on number of digits

 

So,the answer us

 

111 x 20 x (0+1+2+3+4+5) = 33300

 

We got 20 as follows. If we have 0 in units place we can form a number in 4*5 ways. This is for all numbers. So we have substituted 20 in formula.

 

Now, this is not the final answer because we have included 0 in hundreds place. so we have to remove the sum of all numbers that starts with 0.

 

This is nothing but the sum of all 2 digits numbers formed by 1 2 3 4 5. Because 0 at first place makes it a 2 digit number.

 

So the sum for this is 11 x 4 x (1+2+3+4+5).
=660

 

Hope u understood why we use 4. Each number can be formed in 4x1 ways

 

So, the final answer is 33300-660 = 32640

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Filed Under: Permutations and Combinations
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2 2970
Q:

Which among the following pairs is mismatched?

A) Electricity act – 2003 B) Green Revolution – 1991
C) National Telecom policy – 2012 D) National policy on skill & development–2009
 
Answer & Explanation Answer: B) Green Revolution – 1991

Explanation:

The given matching is about the policies and acts names and in which year they took place.

Here Green Revolution - 1991 is given and which is not TRUE. It took place in between 1960 - 1980.

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Filed Under: World History
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4 2968
Q:

What is the opposite of opposite?

A) Identical B) Not alike
C) Not same D) Contrast
 
Answer & Explanation Answer: A) Identical

Explanation:

Opposite means not identical, not same, not alike, contrast...

 

Here in the question, the opposite of the word opposite is asked and is opposite of not same , not identical or not alike is same, like, identical,...

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Filed Under: English
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1 2966
Q:

The book "Two Year Eight Months and Twenty –Eight Night" is authored by

A) Salman Rushdi B) Deepak Nayyar
C) Javier Moro D) Khurshid M Kasuari
 
Answer & Explanation Answer: A) Salman Rushdi

Explanation:
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Filed Under: Books and Authors
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5 2966
Q:

HTML documents are saved in

A) Machine language codes B) ASCII text
C) Special binary format D) None of the above
 
Answer & Explanation Answer: B) ASCII text

Explanation:

Word and WordPad can save documents as ASCII text and HTML, but this approach can lead to problems. NotePad should launch with a new document open.

From the File pull-down menu, Select "Save As," save the file to the Desktop, and name the file using the ".html" extension (e.g., "home.html").

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0 2964
Q:

What is the freezing point of water in Celsius?

A) 0 deg C B) 32 deg C
C) -42 deg C D) -32 deg C
 
Answer & Explanation Answer: A) 0 deg C

Explanation:

The freezing point of water and melting point is 0 °C or 32 °F. The temperature may be lower if supercooling occurs.

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Filed Under: Chemistry
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Q:

General Knowledge, Language, And Concepts Are Seen As Parts Of

A) procedural memories B) semantic memory
C) declarative memories D) episodic memory
 
Answer & Explanation Answer: B) semantic memory

Explanation:
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Filed Under: General Awareness
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Q:

The GPS device in an automobile uses which communication channel?

A) Satellite B) Microwave
C) Radio frequency D) Infrared
 
Answer & Explanation Answer: A) Satellite

Explanation:

All automobiles uses satellite communication channel for their GPS devices.

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Filed Under: Physics
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2 2962