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MHT CET202015 Oct 2020Evening ShiftMathematicsProbabilityActual

In a single throw of three dice, the probability of getting a sum at least 5 is

Options

  1. A53 54
  2. B51 54
  3. C1 54
  4. D2 3

Correct answer

A. 53 54

Step-by-step solution

Here n(S)=6 6 6=216 Sum less than 5 (1,1,1),(1,1,2),(1,2,1),(2,1,1) Here P ( sum less than 5 )= 4 216 = 1 54 P ( at least 5 )= P ( 5)=1- P ( < 5)=1- 1 54 = 53 54

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