Latest Infosys Aptitude Question SOLUTION: in a railway station, there are tow trains going. One in the harbour line and one in the main line, each having a frequency of 10 minutes. the main line service starts at 5 o

• Placement Papers
• /
• Infosys

Infosys Question Papers: Infosys Interview Experience(10) INFOSYS Company Profile

(#M40000803) INFOSYS question Keep an EYE

in a railway station, there are tow trains going. One in the harbour line and one in the main line, each having a frequency of 10 minutes. the main line service starts at 5 o'clock. the harbour line starts at 5.02a.m. a man goes to the station every day to catch the first train. what is the probability of man catchinhg the first train

Solution

In every interval of 10 minutes, 8 minutes are there for train 1 and 2 minutes for train 2 so probability to catch the train 1 is 8/10. answer by SUCHANDRA RAAVI is good

Like manish sir answer on facebook.

Asked In Infosys Yashar (13 years ago)

Solved suchandra raavi Read Solution (2)

Is this Puzzle helpful?   (2)   (0) Submit Your Solution

Read Solution (2) :

suchandra raavi  (13 years ago)

Name train of the main line(first train) as train1 and other train as train2.
Now let the man go to the station at 5:00. He catches train1. Now let the man go to the station at 5:01, he catches train2. If he goes at 5:02, he catches train2 again. If he goes at 5:03 he catches train1(train 1 comes again at 5:10 as the freq is 10 min). At 5:04....5:09 (total 7 min) he still catches train1. At 5:10 the situation repeats as from 5:00 so dont take 5:10 into our prob. So in those 10 min total number of times he got first train i.e train1 is 8 times. So probability of catching first train(train1) is

Is this solution Helpfull? Yes (6) | No (1)  

suchandra raavi  (13 years ago)

The ans did not get printed. Let me finish. Probability of catching first train(train1) is 8/10=4/5

Is this solution Helpfull? Yes (4) | No   

Please Login to Read Solution.