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Q.

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How many students are over 170cm tall?


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a

14

b

9

c

5

d

10  

answer is A.

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Detailed Solution

Given is a histogram which shows height of students.
Question ImageFrom the histogram, create the following table.

Height (in cm)

No. of students

150-155

5

155-160

1

160-165

5

165-170

5

170-175

9

175-180

5

Now, number of students whose height is over 170cm =9+5 ⇒ Number of students whose height is over 170cm=14
Hence, 14 students are over 170cm tall.
Hence, the correct option is 1.
 
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