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Incognito
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Directions for Questions 1 to 3

A class has certain number of students , each having 1 to 6 books. The total number of students having 2 to 5 books each is 10. A total of 7 students have 4 to 6 books each . The total number of students having 2 or 3 books each is 4.

Q1. how many students have 6 books each ?
a.2                       
b.1                 
c.3                             
d.0

Q2. If the total number of students in the class is 13 , how many students have only one book each?
a.2                     
b.1                     
c.3                             
d.0

Q3. If 6 students have 3 or 4 books each and 4 students have 5 or 6 books each, how many students have 2 books each?
a. 2                    
b. 0                   
c. 3                             
d. none

ryan's picture
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Last seen: 9 years 3 weeks ago
Joined: 2008-11-04
Q1

no. of students with 2 to 5 books = 10 no. of students with 2 or 3 books = 4 hence , no. of students with 4 to 5 books = 6 no. of students with 4 to 6 books = 7 therefore, no. of students with 6 books = 7-6 = 1.

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ryan's picture
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Last seen: 9 years 3 weeks ago
Joined: 2008-11-04
Q2

from the above data we get that
no. of students with 1 book = 13 - ( 6+4 +1) = 2

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