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Q.

2. In a group of x children, 10 like Maths and 25 like English. 7 like both subjects and 17 like neither. How many children are there in the group? (Hint: If 10 children like Maths, this does not mean ONLY 10 children like Maths.)

Asked by jameel ahmed, 27 Feb '09 08:51 pm
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Answers (8)

 
1.

45 This problem best solved with the help of Venn diagrams and theory of sets (I solve it with the help of Venn diagrams which i can not draw here) .
students like only maths 3 (1) students like only English 18 (2) students like both English and Maths 7 (3) and students dont like either subjects 17(4) now total students =sum of (1)+(2)+(3)+(4) = 3+18+7+17 = 45
therefore total students = 45 or X = 45
Answered by KARTIKAY SHARMA, 28 Feb '09 11:36 am

 
  
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2.

45
Answered by mohd yousuf, 07 Mar '09 02:42 pm

 
  
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3.

[ (10+25)-7] +17=45
Answered by bijoy agarwala, 28 Feb '09 12:05 pm

 
  
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4.

X
Answered by akash, 27 Feb '09 08:57 pm

 
  
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5.

45
Answered by varun shah, 27 Feb '09 08:56 pm

 
  
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6.

45
Answered by Joseph Chacko, 27 Feb '09 08:55 pm

 
  
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7.

(glances his eyes towards Conviction's exam paper)....

45
Answered by A Moin, 27 Feb '09 08:54 pm

 
  
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8.

45 :d
Answered by conviction, 27 Feb '09 08:53 pm

 
  
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