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MathematicsProbabilityConditional probabilityMedium2 minPYQ_2022
MathematicsMediumsingle choice

A biased die is marked with numbers2,4,8,16,32,32on its faces and the probability of getting a face with marknis1n. If the die is thrown thrice, then the probability, that the sum of the numbers obtained is48, is

Options:

Answer:
D
Solution:

P2=12,P4=14,P8=18,P16=116,P32=132

When we get the faces as 8,8,32 then the probability will be 318×18×232=31024

When we get the faces as 16,16,16 then the probability will be 116×116×116=14096

Hence, the required probability will be31024+14096=134096

Stream:JEESubject:MathematicsTopic:ProbabilitySubtopic:Conditional probability
2mℹ️ Source: PYQ_2022

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