AP EAMCET · Maths · Probability
A box contains balls, numbered from to . If balls are selected one after the other at random with replacement from the box, then the probability that the sum of the three numbers on the balls selected from the box is an odd number, is
- A
- B
- C
- D
Answer & Solution
Correct Answer
(A)
Step-by-step Solution
Detailed explanation
Probability(odd/even)=12 For sum of three numbers on the balls to be odd: Case 1 - odd+odd+odd i.e. probability=12×12×12 Case 2 - odd+even+even i.e. probability=12×12×12 Case 3 - even+odd+even i.e. probability=12×12×12 Case 1 - even+even+odd i.e.…
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