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1.  Study the table and answer the questions.
Height (in cm.) Numbers of Girls
Less than 140
Less than 145
Less than 150
Less than 155
Less than 160
Less than 165 		4
11
29
40
46
51

The number of girls whose height is above 150 cm is:

Solution:
Change into class interval
Height   No. of girls
135 - 140. . . . . 04
140 - 145. . . . . 07
145 - 150. . . . . 18
150 - 155. . . . . 11
155 - 160. . . . . 06
160 - 165. . . . . 05
∴ Required answer
= 11 + 6 + 5
= 22

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