Pregunta de entrevista

Entrevista de Assistant Vice President

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Barclays

There are 9 balls one of which is lighter than the others. How would you find the lighter ball in 2 tries

Respuesta

Respuestas de entrevistas

5 respuestas

2

hint. group balls in groups of 6, 2, and 1 .

Anónimo en

1

Roll them and see which ones rolls the furthest

Anónimo en

1

#1: Place on a balance scales 2 groups of 3 balls. If they weigh the same then the lighter ball is in the remaining group of 3, otherwise it is in the lighter group on the scales. #2: With the group that contains the lighter ball, place 2 of the balls on the scales. If they weigh the same then the remaining ball is the lighter one otherwise it is the lighter ball that is on the scales.

Anonymous en

6

Divide the ball into groups of 3

Anónimo en

7

http://brainteaserbible.com/snooker-balls-weighing-scales

an87 en

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