There are 9 balls of equal size and same weight(they look
similar) except 1. How many weights required to find the
dissimilar ball using a weighing balance?
Answer Posted / sumit bakshi(b.c.roy engg. col
ans:1
At first we divided the 9 balls in two gr. let gr.1 & gr.2 .then simillarly divide gr.1 balls into gr.3 & gr.4.Again gr. 2 balls are divide into gr.5 & gr.6 .Then we get atleast one disimilar ball!
| Is This Answer Correct ? | 4 Yes | 6 No |
Post New Answer View All Answers
The ratio of the length : breadth : height of a cuboid is 5 : 4: 3, and the volume is 7500. What will be its surface area ?
Robert is travelling on his cycle and has calculated to reach point a at 2 p.m. If he travels at 10 kmph, he will reach there at 12 noon if he travels at 15 kmph. At what speed must he travel to reach?
Four Members A, B, C, D are playing a game .A person losing a game should double the amount of others .B, C, D are losing in order after three games .The amount after 3 games are A&B having 40,D is having 16&C 80.What amount did B have?
10 : 4 seconds :: ? : 6 minutes
sir , i hv done 85 correct question in ssc cgl-tier-i 2010 after checking through my source which is correct , tell me whether i m eleigible for tier-ii or not charan , jalandhar
A moves 3 kms east from his starting point . He then travels 5 kms north. From that point he moves 8 kms to the east.How far is A from his starting point?
The price of sugar increases by 20%, by what % house-wife should reduce the consumption of sugar so that expenditure on sugar can be same as before
hi i am going to write SBI Technical Executives entrance exam.pls help me out in clearing thisexam.kindly proivde me the question papers..
There are two glasses, one is filled with orange juice and other is filled with apple juice both in equal quantities say 50 50 ml. 50% orange juice is poured in apple juice and than the 50% mixture of orange and apple juice is poured in the glass of orange juice. Now you have to find out how much orange juice is there in apple juice glass and vice-versa.
A man has Rs 2. He wins or loses Re 1 at a time. If he wins he gets Re 1 and if he loses the game he loses Re 1. He can loose only 5 times. He is out of the game if he earns Rs 5.Find the number of ways in which this is possible?
Delhi's population is increasing day by day what is the reasong behind it & how can we solve it. G.D QUESTION (amit_nirwan@yahoo.com)
Three years ago my uncle offered me a used keyboard for Rs. 1024. A year later he offered me the same for Rs. 640 and last year he wanted Rs. 400 and now he is willing to sell it to me for Rs. 250. But I have decided to buy it when he reduces the price next time. If he is constantly reducing its price, at what price will he offer the keyboard to me next?
A person went to shop and asked for change for 1.15 paise. But he said that he could not only give change for one rupee but also for 50p, 25p, 10p and 5p. What were the coins he had ?
If two pencils cost 8 cents, then how much do 5 pencils cost?
in how many ways can a lock be opened if that lock has three digit number lock if the last digit is 9 and sum of the first two digits is less than or equal to the last digit. numbers are from 0-9