Скачать или смотреть 4MB1/01 SOLVED EXAM QUESTION NO.24-NOV 2023-MATHEMATIC B -GCSE-EDEXCEL-TOPICWISE FURTHER PROBABILITY

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#EDEXCEL_IGCSE_ Mathematics B
#maths

Question
A box contains n buttons.
The buttons are either red or blue such that
number of red buttons : number of blue buttons = 3 : 5
A sample of 2 buttons is taken at random from the bag.
Given that the probability of the 2 buttons being the same colour is 10
19
find the value of n


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