In a Mathematics test, the following marks were obtained by 40 students. Arrange these marks in a table using tally marks.
(a) Find how many students obtained marks equal to or more than 7.
(b) How many students obtained marks below 4?
Solution:
(a)
Number of students who got marks equal to 7 or more = 5 + 4 + 3 = 12
(b)
Number of students who obtained marks less than 4 = 3 + 3 + 2 = 8
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