You have 9 marbles. 8 marbles weigh 1 ounce each, & one
marble weighs 1.5 ounces. You are unable to determine which
is the heavier marble by looking at them. You have a
weighing scale that consists of 2 pans, but the scale is
only good for 2 total weighings.
How can you determine which marble is the heaviest one using
the scale & in 2 weighings?
Answer Posted / siddarth chordia
The answer should be arrived in 2 weighings only with worst case scenarios to be considered...
So let us take 3 marbles in each pan
Step 1: If it weighs the same the heavier marble is in the other 3 marbles. else if it differs the heavier side in the balance has the heaver marbles.
Now we have 3 marbles to identify which is the heavier one...
Step 2: From the remaining 3 marbles, keep 1 marble in each pan. If it weighs the same, then the remaining one is the heavier, else which ever side on the balance weighs heavier then that is heavier.
Hope I hit the point of your question with only 2 weighings, to find the answer :)
Is This Answer Correct ? | 6 Yes | 1 No |
Post New Answer View All Answers
What is the syllabus for numerical aptitude exam to be held by the United bank of India. Plz inform me through email. Thanking You!
what job position/s are you currently holding with your current employer?
why should we hire the others waiting to be interviewed?
4_4_4_4=22 use all sign of maths
IDear sir, I have had a data containing of 4 numbers on daily basis for which I would like to know what is the next comming 4 numbers. Based on that data I would like to find out the next comming numbers. Support needed. regards chandramohan gudivada 09849974512 cm116_99@yahoo.com Example : 4513, 4132, 1465, 2941, 1762, 1432, 3412, 5283, 7261, 2643, 4751, 2581, 6513 .... and what is the next number in the sequence?
Wo kay chej hi jo saal may 1 baar aata hai months may 2 baar aata hai weeks may 4 baar aata hai or din may 6 baar
sir i need catholic syrian bank previous question papers fully. it will be helpful for me to greater extend .please do the needful to me.
sir i need generalKnowledge previous questions for rrb secunderabad goods guard exam
Ship is 180 miles away from shore. At that time a plane started from shore to pass some information to the ship with 10 times velocity of ship's velocity. At what distance from shore they will meat?
There is puzzle with the word "CONSTANTINE" and exactly don't know the question if anybody knows the Q&A plz send it ahmed.basha.munna@gmail.com
what three specific job positions do you target from qatar airways group u.k?
plz send me aptitude test questions on my email id bpraichur@gmail.com
At 6o'clock ,a watch strokes 6 times.The time between first and last is 30secs.At midnight 12o' clock how much time for all strokes?
In rail road there are some stations. Each station should have tickets to all other stations.If they add some new stations they need 46 more tickets.How many stations are there before and after adding the stations?
In a soap company a soap is manufactured with 11 parts. For making one soap you will get 1 part as crap. At the end of the day u have 251 such scraps. From that how many soaps can be manufactured?