Posts Tagged ‘counterfeit coin’

Can someone answer these math questions?! Test of Genius worksheet.?

(1) Make this equation correct by changing the position of only one digit.

101-102=1

(2) Steven has 9 gold coins that are identical in appearance. However, one coin is counterfeit and weighs slightly less than the others. Using a balance scale, how can he find the counterfeit coin inn just two weighings?

(3) In the following addition problem, the letters A,B,and C stand for three different digits… Continue reading

Finding the counterfeit coin?

How do we find a counterfeit coin among four coins and determine whether it is too heavy or too light?… Continue reading

You have 12 coins with the same appearance, but one is counterfeit.?

You don’t know if the counterfeit coin is heavier or lighter than the others, and you only have a pan balance. What’s the minimum number of weighings to determine the counterfeit, and how?… Continue reading

what does break in the action mean?

I need help with a crossword puzzle.It was assigned for homework over the weekend and I can’t figure some out. Please help.
1.Bath-powder ingredient. - - - c
2.Scheduled to arrive.- - -
3.Aware of. I N O -
4.At any time. E V E -
5.Disorder. M E D -
6.Counterfeit coin. - - U G
7.Eastern European. - - A V
8.Not factual. - O - R -… Continue reading

Coin Prob-2??

if u r given the information that the counterfeit coin is heavier than the others,how u will pick it in only 2 weighings?… Continue reading

counterfiet coin puzzle?

there are ten stacks of ten silver dollars. you are given the weight of a real silver dollar, and are told each counterfeit coin weighs one gram more than a real silver dollar. you also know that one of the stacks is completely counterfiet, and you can use a scale that weighs by grams, what is the minimum number of weighings needed to determine the counterfeit stack?… Continue reading

U have 16 coins & a balance. 15 of the coins are regular & 1 is a lighter counterfeit coin. Explain how u coul?

You have 16 coins and a balance. Fifteen of the coins are regular, and one is a lighter counterfeit coin. Explain how you could identify the counterfeit coin after the three weightings.… Continue reading

DECISION TREES. Suppose you have a set of 13 coins, one of which is counterfeit (lighter).?

Suppose you have a set of 13 coins, one of which is counterfeit (lighter). Draw a tree to show how you can figure out the counterfeit coin using an unlabelled balance using the fewest number of comparisons.… Continue reading

DECISION TREES. Suppose you have a set of 13 coins, one of which is counterfeit (lighter).?

Suppose you have a set of 13 coins, one of which is counterfeit (lighter). Draw a tree to show how you can figure out the counterfeit coin using an unlabelled balance using the fewest number of comparisons.… Continue reading

Hard MATH PROBLEM HELP PLEASSE!!!!!!!!!?????

THere are twelve coins that are numbered 1 through 12. Eeleven weigh the same and one is either lighter or heavier than the others. Using just three weighings with a balance scale, devise a scheme that will find the counterfeit coin AND determine whether it is lighter or heavier.… Continue reading