A Sorority Has 27 Members, 21 of Whom Are Full

question 84

Multiple Choice

A sorority has 27 members, 21 of whom are full members and 6 are pledges. Two persons are selected at random from the membership list of the sorority. Find the probability: the first person selected is a pledge. ​

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Definitions:

RhoGAM

A medication that prevents an Rh-negative mother from making antibodies against the Rh antigen.

Rh-positive

A blood group classification indicating the presence of the Rh antigen on the surface of red blood cells, which is a significant factor in blood transfusions and pregnancy.

Vitamin B12 Anemia

A medical condition resulting from the lack of sufficient vitamin B12, affecting the body’s ability to produce healthy red blood cells, leading to anemia and neurological issues.

Absorb

The process by which one substance takes in or soaks up another substance, often used in biological or chemical contexts.