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1) In the class of 40 students, 30 speak Hindi and 20 speak
English. What is the lowest possible number of students who
speak both the languages?
(a) 5 (b) 20 (c) 15 (d) 10 (e) 30
- 11 Answers
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Answer / vinotha
The answer is 10.
The students who speak both languages=no of students speak
English+No of students speak Hindi-Total no of students
| Is This Answer Correct ? | 76 Yes | 5 No |
simply 10 can't speak hindi & 20 can't speak english
total no of student in class is 40 - 30 (can't speak one of
the language = 10 (can speak both.
| Is This Answer Correct ? | 20 Yes | 5 No |
Answer / annapurna
let the student who speaks hindi-x
let the student who speaks english-y
as (xuy)-(xny)=total
30+20-(xny)=40
=10
| Is This Answer Correct ? | 16 Yes | 3 No |
Answer / chetan kumar
hello guys please read the questions carefully...the question
asked the lowest possible no of students who can speak both
Hindi and English
that is 50-(30+10)=10;
so 10 is the largest possible number but the lowest is 5
so the answer would be 5 i. e. option a.
| Is This Answer Correct ? | 8 Yes | 3 No |
Answer / vams
n(AUB)=n(A)+n(B)-n(AnB);
here n(A)=30;
and n(B)=20;
And n(AUB)=40;
then n(AnB)=?
find it..
n(AnB)=10..
| Is This Answer Correct ? | 6 Yes | 2 No |
Answer / renesh
english=30
hindi=20
total=30+20=50
english=50-40=10
| Is This Answer Correct ? | 2 Yes | 6 No |
Answer / pratik
it should be 5 because it is the minimum no there is
possibility of 10 also but 5 is leethan 10 so a) is ans
20&30no chance
| Is This Answer Correct ? | 18 Yes | 25 No |
7:53 8=?
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