[otrivine]

Hi can someone explain to me question 2)b) on the jan 2012 paper ~???P(B) or the whole part getting really stressed with that question dont get the logic.

[nickss]

P(A u B)= P(A) + P (B) - P(A n B)

As the events are independent, P(A n B)= P(A) x P(B)

Hope that explains it.

[otrivine]

(Original post by nickss)
P(A u B)= P(A) + P (B) - P(A n B)

As the events are independent, P(A n B)= P(A) x P(B)

Hope that explains it.

thanks but then how did he get 3/4 ?

[nickss]

(Original post by otrivine)
thanks but then how did he get 3/4 ?

The answer is 5/9 no?

[AishaTara]

does anyone have the jan 2012 paper please?

[raheem94]

(Original post by AishaTara)
does anyone have the jan 2012 paper please?

Download it from my thread.