Quality assurance interview questions shared by candidates
Written Test Question - 4 people with different speeds respectively 1,2,5,10 min and a bridge can only hold 2 persons at a time and you have only 17 min left. How do you cross the bridge?
How about this, just a trial: 10 and 1 in 1st slot total time taken by them- 10 mins 5 and 2 in 2nd slot ,total time taken bye them - 5 mins so they can pass the bridge in 15 mins.
10 minute goes first, along with 5 min individual. The once the individual with the lower time crosses the 10 minute individual is still on the bridge for another 5 mins. so allow 2 min individual onto bridge and 10 min indvidual will have 3 mins left to complete. let 1 min individual cross and they'll be done before the 10 minute individual Total time: 10 mins
No. 1 and No. 2 go across: 2 minutes No. 2 returns with flash: 2 minutes No. 3 and No. 4 go across: 10 minutes No. 1 returns with flash: 1 minute No. 1 and No. 2 go across: 2 minutes = 17 minutes
You have 9 marbles which are all the same weight, except for one which is slightly heavier than the others. You also have an old?style balance, which allows you to weigh two piles of marbles to see which one is heavier (or if they are of equal weight). What is the fewest number of weighings that you can make which will tell you which marble is the heavier one ?
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