Skip to content
MathsGenie logo
Quick links
Open app

Course home

  1. A Level
  3. Maths WJEC
  5. Question bank

4.1.1 Probability (A-level only)

MediumHard
12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788899091929394959697
Question 16

The events X X\,X and Y Y\,Y are such that P(X)=0.6P(X) = 0.6P(X)=0.6, P(X∩Y)=0.12P(X \cap Y) = 0.12P(X∩Y)=0.12 and P(X∣Y)=0.3P(X|Y) = 0.3P(X∣Y)=0.3.

a.

Find P(Y)P(Y)P(Y).

[3]
b.

Find P(X∪Y)P(X \cup Y)P(X∪Y).

[3]
c.

Find P(Y∣X′)P(Y|X')P(Y∣X′).

[3]

4.1.1 Probability (A-level only) Questions

  1. A Level
  2. /Maths
  3. /4.1.1 Probability (A-level only)