GATE CSE 2023 | GA Question: 4

Question

A survey for a certain year found that $90\%$ of pregnant women received medical care at least once before giving birth. Of these women, $60\%$ received medical care from doctors, while $40\%$ received medical care from other healthcare providers.

Given this information, which one of the following statements can be inferred with certainty?

• A. More than half of the pregnant women received medical care at least once from a doctor.
• B. Less than half of the pregnant women received medical care at least once from a doctor.
• C. More than half of the pregnant women received medical care at most once from a doctor.
• D. Less than half of the pregnant women received medical care at most once from a doctor.

Comments

was this a one mark question or two?

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1 mark

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Option A ?

Answer 1

From the above diagram:

• The number of pregnant women who received medical care from doctor= $0.6*0.9*100=54$
• The number of pregnant women who  received medical care, not from a doctor (other health care providers )=$0.4*0.9*100=36$

Option (A) is correct.

PYQ: GATE CSE 2022 | GA Question

 

Comments

Tree method. Good approach.

Answer 2

Let pregnant women count be x

90% of x received medical care at least once

60% of 90% of x = 54 % of x,  received medical care from doctors

Answer : A)