There are 3 ants at 3 corners of a triangle, they randomly
start moving towards another corner. What is the
probability that they don't collide?
- 7 Answers
- 32942 Views
- TCS, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / rick
The probability is 25% because there are 3 ants all with
two possible paths and 8 total possible outcomes. But
there are two possible outcomes that the ants don't
collide. Either they move one way or the other. 2/8 = 25%.
| Is This Answer Correct ? | 84 Yes | 9 No |
Answer / gourav
Each ant can move in 2 directions. Lets say direction are
Left (L) and Right (R). Solution if all ants move either
towards L or R. For L (1/2 * 1/2 * 1/2) = 1/8. Same for R =
1/8. Total for L and R = 1/8 + 1/8 = 1/4.
| Is This Answer Correct ? | 66 Yes | 4 No |
Answer / sandeep reddy
To prevent collision ants have to move in this particular way
A-->B,B-->C,C-->A ; probability=(1/2*1/2*1/2)
in opp direction
A-->C,C-->B,B-->A ; probability=(1/2*1/2*1/2)
probability that the ants doesnt coincide=
(1/2*1/2*1/2)+(1/2*1/2*1/2)
=(1/8)+(1/8)
ans. 1/4
| Is This Answer Correct ? | 25 Yes | 3 No |
Answer / rajat
actually we have to take care that no 2 ants should
collide....therefore, that is only possible if 1st follows
the second and second follows the third and third follows
the first..........plus it can be either clockwise or
anticlockwise....hence 2 ways out of 8 ways.....ans is
2/(2*2*2)=1/4
| Is This Answer Correct ? | 7 Yes | 3 No |
Answer / puneet madan
How can we assume the triangle to be equilateral?
If we assume it to be an equilateral triangle, then the probability is 0.25.
| Is This Answer Correct ? | 1 Yes | 1 No |
Answer / nick
Actually we can say with absolute certainty that two of the
ants will move in the same direction. One of them may not.
It is a trick question. There is a 50/50 chance that one of
the ants may not move in the same direction as the other two.
So the answer is 50%.
| Is This Answer Correct ? | 1 Yes | 7 No |
Answer / swathi
How do you consider that the ants can move only in 2
directions (L or R) ? They could even move "randomly", say
straight, collide, and then move to some corner..
| Is This Answer Correct ? | 1 Yes | 21 No |
On an average, how many times would you have to open the Seattle phone book to find a specific name?
What new feature would you add to MSWORD if you were hired?
Tell me difference between sap bi & business object dw/ reporting?
DIFFERENCE BETWEEN RELEASE AND VERSION???
If during some stage down the life cycle, the initial requirements change, what will you do? How will you handle any changes in the requirements?
Where can I get excellent free Business Analyst training online?
How do you ensure that you base your software plans, work items and products on the requirement?
Who reviews the requirements and the changes to the requirements?
HI every one i want be mainframes mvs admin interview questions.
You run a technical support website where members post questions and answers to problems experienced and general know how. You have to provide explanations to recently posted questions. Some opf these questions need reasearch.
When requirements change, how do you handle the changes it may lead to project progress and schedule?
Why is it that hot water in a hotel comes out instantly but at home it takes time?
Design Patterns 
