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SSC CGL 2020 PYQ — Question 71

SSC CGL - 3rd March 2020 Shift 3 • Quantitative Aptitude • Q71

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From the following Table, how many patients were in the age group 40-60?

Age (years)

less

than 10

less

than 20

less

than 30

less

than 40

less

than 50

less

than 60

less

than 70
No. of patients 11 15 22 29 35 45 50

 

Show answer & explanation

Correct answer: D

Explanation

The correct answer is Option 4 i.e 16.

Understanding/Application
Age No. of patients (c.f.) Class Interval f
less than 10 11 0 - 10 11
less than 20 15 10 - 20 4
less than 30 22 20 - 30 7
less than 40 29 30 - 40 7
less than 50 35 40 - 50 6
less than 60 45 50 - 60 10
less than 70 50 60 - 70 5
      50

Number of patients in the age group of 40 - 50 = 6

Number of patients in the age group of 50 -60 = 10
Total patients in the age group of 40 - 60 = (10 + 6) = 16 patients