Latest Infosys Aptitude Question SOLUTION: Q. There are three boxes , In one box Two Red balls , In two box 2 blue balls In three box 1 Red & 1 blue. The labels on the boxes are not correct. Then you have to open one box an

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Q. There are three boxes , In one box Two Red balls , In two box 2 blue balls In three box 1 Red & 1 blue. The labels on the boxes are not correct. Then you have to open one box and to find the colour of the balls in all boxes

Asked In Infosys RagunathKC (10 years ago)

Unsolved Read Solution (6)

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Read Solution (6) :

sujatha  (10 years ago)

1st box 2nd box 3rd box
2 red 2 blue 1 red & 1 blue
If we assume lables on the boxes are 1st box has 3rd box label ,2nd box has 1st box label nd 3rd box has 1st box label.
If open any box we can know which colour is originally inside then automatically we can find the remaining two because the lables on the boxes shows wrong information

Is this solution Helpfull? Yes (11) | No (9)  

Karthik  (10 years ago)

There are three boxes , In one box Two white balls , In two box 2 black balls In three box 1 white &1 black
The lables on the boxes are not correct.Then you have to open one box and to find the colour of the balls in all boxes.
Solution: Open the box labled black& white If white balls are there then the box labled with white balls
contain black balls and labled with black balls contain one black and one white ball and viceversa
if two black ballsare there.

By
karthik (gvkarthik001@gmail.com)

Is this solution Helpfull? Yes (4) | No (3)  

m.sindhuri  (10 years ago)

can any1 xplain me d que???????

Is this solution Helpfull? Yes (3) | No   

Amruta N  (10 years ago)

Assume as follows
box 1= 2 red balls and label= 2 blue balls
box 2= 2 blue balls and label= 1 red 1 blue
box 3= 1 red 1 blue ball and label= 2 red balls
if we open box 1 then we can see red balls and as the labels on all boxes are wrong, we take the label correct label from box 3 and stick it to box 1 and interchange other two box labels because by keeping any label as it is we show that it is correct but its mentioned in the problem that all labels are wrong.

lengthy info but i hope this helps

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vikram singh kanwal  (10 years ago)

open the box labelled 2blue balls and for sure you'll find either 2 red balls or 1 red and 1 blue ball.

case1: you get 2 red balls
the box labelled 2red balls wil have 1red+1blue and the other box will have 2 blue balls

case2: you get 1red+1blue
the box labelled 2 red balls will have 2 blue balls and 1red+1blue one will have red balls

NOTE: as all the box are not labelled correctly.

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sunny  (9 years ago)

pick the box from which labeled mixed, it surely red or blue box
if u get red(assume) then remaining box never be never be red and also both box written wrong
blue box cant have blue balls or red balls so it has mixed ball.
finally the leftover box is having colored balls.

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