Q : 1      In a Mathematics test, the following marks were obtained by 40 students. Arrange these marks in a table using tally marks.

8 1 3 7 6 5 5 4 4 2
4 9 5 3 7 1 6 5 2 7
7 3 8 4 2 8 9 5 8 6
7 4 5 6 9 6 4 4 6 6

                           

(a) Find how many students obtained marks equal to or more than 7.                                                 

(b) How many students obtained marks below 4? 

Answers (1)

Marks

Obtained

Tally Marks

Number of 

Students

1    \mid \mid 2
2     \mid \mid \mid 3
3    \mid \mid \mid 3
4 \bcancel{\mahsf{\mid \mid \mid \mid }} \mid \mid 7
5 \bcancel{\mahsf{\mid \mid \mid \mid }} \mid 6
6 \bcancel{\mahsf{\mid \mid \mid \mid }} \mid \mid 7
7 \bcancel{\mahsf{\mid \mid \mid \mid }} 5
8  \mid \mid \mid \mid 4
9  \mid \mid \mid 3
Total   40

 

(a) Number of  students who obtained marks equal to or more than 7 = 5 + 4 + 3 = 12

(b) Number of  students who students obtained marks below 4 = 3 + 3 + 2 = 8

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