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Question
Mathematics
In a collage of 300 students, every student reads 5 newspapers and every newspaper is read by 60 students. The number of newspapers is
Q. In a collage of
300
students, every student reads
5
newspapers and every newspaper is read by
60
students. The number of newspapers is
1815
182
IIT JEE
IIT JEE 1998
Permutations and Combinations
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A
atleast 30
22%
B
atmost 20
13%
C
exactly 25
55%
D
None of these
10%
Solution:
Let
n
be the number of newspapers which are read by the students.
Then,
60
n
=
(
300
)
×
5
⇒
n
=
25