The Venn diagram shows the number of students in a group of 30 who have brothers $$$(B)$$$, sisters $$$(S)$$$ or cousins $$$(C)$$$. One student is picked at random from the 30 students. Find the probability that this student has cousins.

Mathematics

IGCSE&ALevel

CAIE

Exam No：0580_s21_qp_41 Year：2021 Question No：6(c)(v)

Answer:

$\frac{19}{30}$ oe

Knowledge points:

E8.1 Calculate the probability of a single event as either a fraction, decimal or percentage. (Problems could be set involving extracting information from tables or graphs.)

Solution:

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The Venn diagram shows the number of students in a group of 30 who have brothers $$\((B)\)$$, sisters $$\((S)\)$$ or cousins $$\((C)\)$$. One student is picked at random from the 30 students. Find the probability that this student has cousins.

Answer:

Knowledge points:

Solution:

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