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In the following diagram, R = Students, P = Boys, W=Girls, and Z = Psychology. The numbers in different sections indicate the number of persons. How many girls are psychology students ?

image.png

A16

B19

C18

D17

Answer:

A. 16

Read Explanation:

There are 16 girls who are psychology students.

  • W (Girls): Bottom-right circle

  • Z (Psychology): Top-right circle

  • R (Students): Bottom-left circle

To find the number of girls who are psychology students, we need to find the region where these three circles (W, Z, and R) overlap:

  • The number 16 lies exactly at the intersection of the W, Z, and R circles.

  • (Note: The number 22 is not included because those individuals are in Z and W, but not inside the Student circle R).

Related Questions:

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Given below are three statements and three conclusions. Take the statements to be true even if they are at variance with commonly known facts, and decide whether the conclusion/s follow/s the given statements.

Statements:

I. Some lions are cats.

II. All cats are animals.

III. Some animals are not lions.

Conclusions:

I. Some animals are lions.

II. All lions are animals.

III. No animal is a lion.

Given below are three statements and three conclusions. Take the statements to be true even if they are at variance with commonly known facts, and decide whether the conclusion/s follow/s the given statements.

Statements:

I. All pen drives are hard drives.

II. Some hard drives are chips.

III. All chips are keyboards.

Conclusions:

I. Some keyboards are pen drives.

II. Some chips are pen drives.

III. Some keyboards are hard drives.

Read the given statements and conclusions carefully. You have to take the given statements to be true even if they seem to be at variance from commonly known facts.mYou have to decide which conclusion/s logically follow/s from the given statements.

Statements:

All shirts are jeans.

All jeans are ties.

No tie is a watch.

Conclusions:

I: All shirts are ties.

II: No jeans is a watch.

In a society with 100 members , each member plays atleast one sport amongst cricket, hockey and volley ball. If 20 members plays cricket only , 30 play hockey only, 25 play volley ball only, 12 play both cricket and hockey, 7 play both hockey and volley ball and 3 members play all the sports , then how many members play atleast two sports ?