Interested to Buy Any Domain ? << Click Here >> for more details...
You have 8 balls. One of them is defective and weighs less
than others. You have a balance to measure balls against
each other. In 2 weighings how do you find the defective one?
- 5 Answers
- 13636 Views
- Microsoft, Oracle, I also Faced
- E-Mail Answers
Answer Posted / abi
Firstly we take 6 balls, placing 3 on each pan of the
balance & check which pan goes up(1st weighing). If no
change it means the balls don't contain the defective
one,therefore the other two contain the defective
ball,which can be found out easily(2nd weighing).
Now if one of the pan goes up,it means it contains the
defective ball(out of 3 balls).We select these 3 & unload
the pans. Now we keep any of the 2 balls(from the selected
balls)on either side of the balance & weigh(2nd weighing).
One of these two will be the defective one and if not the
3rd one leftover is.
| Is This Answer Correct ? | 8 Yes | 1 No |
Post New Answer View All Answers
What is the code formed by reversing the First and second letters, the third and fourth letters and son on of the string SIMULTANEOUSLY?
Sky Heaven is a 16 stored building with 12000 sq. feet on each floor. Zintac International rents 7 floors and Zobia International rents 4 floors. What is the number of sq. feet of unrented floor space?
The day before yesterday was WEDNESDAY then the day after tomorrow is?
If the bus travels with 8 tyres(6 tyres running),travels a distance of 16000 km how much is the distance sustained by each tyre.
A boy asks the relation of two people walking along the street. One of them says that the lady walking with him is the daughter of his mother's only son. What is the relation between the two people?
2020201-565656=?
A robber steals half the total no of pastry plus 1/2 tray from a pastry shop. A second robber steals half the remaining no of pastry plus 1/2 tray and so on. After the 5th thief has stolen there are no more pastry left in the pastry shop. What was the total no of pastry did the pastry shop have at the beginning.
In covering a distance of 30 km, abhay takes 2 hours more than sameer. If abhay doubles his speed, then he would take 1 hour less than sameer. Abhay's speed is?
During the early months of 2009, some economists concluded that the slew of U.S. government programs created during the fall of 2008 to stabilize an economy marked by an absence of credit, a wave of enormous asset write downs, a precipitous decline in housing prices, and a historic loss of consumer confidence _________________ has not succeeded in engendering healthy intra-bank credit flows and reviving depressed equity prices has not succeeded in engendering healthy intra-bank credit flows and bringing about the revival of have not succeeded in engendering healthy intra-bank credit flows and reviving depressed equity prices have not succeeded in engendering healthy intra-bank credit flows and to revive depressed equity prices
The cost of 16 articles is equal to sell price of 12 articles. The gain percent is ?
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?
A says “the horse is not blackâ€. B says “the horse is either brown or grey. “C says “the horse is brown†At least one is telling truth and at least one is lying. What is the color of the horse?
If shalu buys 6 more apples, his carton will weigh 14.5 kilograms.if the weight of one apple is 250 grams.how many apples did he initially had in his carton?
if a man reduces the selling price of a fan from 400 to 380 his loss increases by 20% .cost price of fan is.
The price of raw materials has gone up by 15%, labour cost has also increased from 25% of the cost of raw material to 30% of the cost of raw material. By how much percentage should there be a reduction in the usage of raw materials so as to keep the cost same
