Out of 8 balls, one weighs less than the others. You have a
scale. What is the minimum number of weighs to determine the
ball that weighs less?
Answer Posted / thomas kotzyba
1. Determine the set of three with the ball that weights less: Pick 6 balls - weight 3 against 3 - if equal the searched for is within the remaining 3 balls.
2. You are left with a set of three balls, one of which weights less. Pick 2 balls - weight them against each other - if equal the searched for is the one you did not pick.
Ans=2
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
The babylonian number system is base 60, which makes it.
A farmer wishes to make a straight barbed wire fence 80 feet long. He wants to have a fence post every 8 feet. How many fence posts does he need?
Describe about concord pairs?
State the necessary condition for the extreme value.
if logs sqrt(5x)=1,then x equals
if x,y,z are natural numbers, and if 2x=y and y=3z, which of the following numbers could be x+y+z
Name any two contribution of Aryabhatta.
If A = C, B = 2D what should be done to make the ratio same. i.e.a/b = c/d
What types of tools or measuring devices do you use related to math?
Define absolute maximum of the function f(x,y) at (a,b) ?
how do we get the volume of sand
Explain the Lagrange's method of undetermined multipliers to find extreme values of the function f (x,y,z).
In what ways do you use math in your daily life sam?
can i get model papers for the interview for the post of scientist/engineer'SC' at isro
Define Continuity of a function f(x,y) at a point (a,b) ?