Tham KY's answer to Priscilla's Secondary 4 A Maths question.
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For your reference only..
Not sure if the game ends as soon as one wins (3 win spins) or must do all the 5 spins, I did base on the second one. If it is the first one, then just do P(X=3).
BTW, the X represents the number of winning spin out of 5 spins with 1/4 chance of hitting the lucky zone, so X~B(5, 1/4).
Not sure your level of education too, so I showed three methods of calculation...
Not sure if the game ends as soon as one wins (3 win spins) or must do all the 5 spins, I did base on the second one. If it is the first one, then just do P(X=3).
BTW, the X represents the number of winning spin out of 5 spins with 1/4 chance of hitting the lucky zone, so X~B(5, 1/4).
Not sure your level of education too, so I showed three methods of calculation...
Date Posted:
6 years ago
Thank you very much for your help! Appreciate.
Btw, may I know you level of education? Secondary? JC? Or tertiary? The question looks like is JC or above...
My daughter is in the foundation poly program. Thank you very much!
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