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For your last minute practice: Total 23 subject-wise tests, 3 full-length tests, and one Random full-length test.

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6 months 1 week ago

Arun, Gulab, Neel and Shweta must choose one shirt each from a pile of four shirts coloured red, pink, blue and white respectively. Arun dislikes the colour red and Shweta dislikes the colour white. Gulab and Neel like all the colours. In how many different ways can they choose the shirts so that no one has a shirt with a colour he or she dislikes?

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Techtud Editor
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6 months 1 week ago

How many distinct ways are there to split 50 identical coins among three people so that each person gets at least 5 coins?

(A) 35C2
(B) 37C2
(C) 3 35
(D) 3 50 - 2 50

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6 months 1 week ago

Four siblings go shopping with their father. If Abhay gets shoes, then Asha does not get a necklace. If Arun gets a T-shirt, then Aditi gets bangles. If Abhay does not get shoes or Aditi gets bangles, the mother will be happy. Which of the following is true?

(a) If the mother is happy, then Aditi got bangles.
(b) If Aditi got bangles, then Abhay got shoes
(c) If the mother is not happy, then Asha did not get a necklace and Arun did not get a T-shirt.
(d) None of the above.

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6 months 1 week ago

After India’s cricket world cup victory in 1985, Shrotria who was playing both tennis and cricket till then, decided to concentrate only on cricket. And the rest is history. 
What does the underlined phrase mean in this context?

(A) history will rest in peace 
(B) rest is recorded in history books 
(C) rest is well known 
(D) rest is archaic 

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Techtud Editor
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6 months 1 week ago

The chairman requested the aggrieved shareholders to _________________ him.

(A) bare with 
(B) bore with
(C) bear with 
(D) bare 

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it is better and safer to use (!list) than (list==NULL) as while implementation there might be some memory - segmentation fault errors.

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9 May 2017 - 11:44am

Can you share the link of the video?

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@shweta1920, you can try running this codes on your machine too, by downloading the standard c-compiler

see http://www.mingw.org/ : for windows 

and any linux distribution has c-compiler (GCC) by default .

How to run programs using GCC ?

see: http://pages.cs.wisc.edu/~beechung/ref/gcc-intro.html

and http://www.akira.ruc.dk/~keld/teaching/CAN_e14/Readings/How%20to%20Compi...

 

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Please ask you questions in the doubt section of techtud , rather than commenting on a previously asked question. This will increase the visibility of your question .

 

Now, 

Let 60 % of mangoes weigh X grams and,

      40 % of mangoes weigh Y grams 

Let total number of mangoes be "n".

 

A/Q

\(350 = {X \over 0.6n}\)  ⇒  \(350*0.6 = {X \over n}\)   ⇒  \(210 = {X \over n}\)     ------------------------- (1)

\(400 = {Y \over 0.4n}\)   ⇒ \(400*0.4 = {Y \over n}\)   ⇒   \(160 = {Y \over n}\)     --------------------------(2)

(1) + (2)

\(210 + 160 = { X + Y \over n}\)

⇒ \(370 = {Total Wt. \over n}\)

Therefore, Average Weight of mangoes = 370 grams

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2 Oct 2015 - 3:52pm

X.(Y−Z) can be drawn as follows:
 <dot>  =
Similarly, (X.Y)−(X.Z) can be drawn like this:
<minus> =

Hence, we can say that X.(Y−Z) = (X.Y)−(X.Z)

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