Interested to Buy Any Domain ? << Click Here >> for more details...
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?
- 8 Answers
- 20323 Views
- ABC, CTS, IBM, I also Faced
- E-Mail Answers
Answer Posted / mopurizwarriors
anwer is zero!!
here is the explanation:
first divide the balls into almost two equal groups!
i.e.,5 and 5 balls in 2 groups.
then compare the weights of two groups:
again,divide the first and second groups into almost equal
groups!!(say them as 1,2,3,4 groups,where 1,2 are from first
group and 3,4 are from second group).
let group-1 contains 3 balls and group-2 contain 2 balls
find weights of group-1 and group-2.say x,y
so,average weight of balls in group-2 is x/3.
if 2*(x/3)=y,then that odd ball is not present in first
group(don't confuse group-1 with first group).
so,that odd ball may be present in either group-3 or group-4.
continue,the process until u get groups containing only one
ball.
IN THIS METHOD ,YOU HAVEN'T USED ANY WEIGHTS!!!
SO,THE ANSWER IS:zero
| Is This Answer Correct ? | 4 Yes | 17 No |
Post New Answer View All Answers
There are 6 consecutive numbers P, Q, R, S, T, U, not necessarily in that order. Given that, Q is 2 less that P, P is 3 less that T and R is 2 less than S, arrange them in an ascending order.
How many ways can one arrange the word EDUCATION such that relative positions of vowels and consonants remains same?
A ship started from port and moving with I mph and another ship started from L and moving with H mph. At which place these two ships meet ?
If x and x+10 are lengths containing right angle, what is the equation if area is 24 sq.cm
Grass in lawn grows equally thick and in a uniform rate. It takes 24 days for 70 cows and 60 for 30 cows . How many cows can eat away the same in 96 days.?
Person who decided to go to weekend trip should not exceed 8 hrs driving in a day. Average speed of forward journey is 40 miles/hour . Due to traffic in sundays ,in return journey average speed is 30mph . How far he can select a picnic spot ?
In the word ORGANISATIONAL, if the first and second, third and forth, fifth and sixth words are interchanged up to the last letter, what would be the tenth letter from right?
Robert invested rupees 8000 in a fixed deposit scheme for 2 years at compound interest of 5 p.c per annum. Calculate and choose from the below mentioned option, how much amount will Robert get from the fixed deposit on maturity?
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?
There are two queues at a discount store billing counter. In the first queue there are a1 customers all with b1 items in their cart, while in the second queue there are a2 customers all with b2 items in their cart. It takes t seconds to process each item and p seconds for each person to pay. A customer wishes to know which queue to join.Which one of these options gives the condition for the first queue to be the better queue to join?
(7*7=49)(4*9=36)(3*6=18) (1*8=8)
The number 0.05 is what percent of 20?
In 1978, a kg of paper was sold at Rs25/. If the paper rate increases at 1.5% more than the inflation rate which is 6.5% a year, then what will be the cost of a kg of paper after 2 years?
The price of Machine D equals the sum of the prices of machine A, B and C whose price are in the ratio 2:3:4 respectively. If weights of A, B, C and D varies as square of its individual price and difference of weight of D and A, B and C together is 9880 kg. Then what is the weight of D?
the average of seven numbers is 2.5 then their product
