Mathematics - Probability Question with Solution | TestHub

MathematicsProbabilityGeneral (Event SS, Definitions, Odd against/Favour)Easy2 minQB

MathematicsEasyinteger

A die is rolled three times, the probability of getting a large number than the previous number is $\frac{k}{54}$ then the value of k is

Answer:

Solution:

Let the second number be x (where $1 < x < 6$ )

Then first number can be chosen in $(x - 1)$ ways and third in $(6 - x)$ ways

$∴ Favourable cases = x = 2 \sum 5 (x - 1) (6 - x) = 20$

Stream:JEESubject:MathematicsTopic:ProbabilitySubtopic:General (Event SS, Definitions, Odd against/Favour)

⏱ 2mℹ️ Source: QB

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