...: (1) 1 person pays it all (can't get 8.41 in nine coins ) (2) 29 people pay 0.29 each (4 pennies, 5 nickels each) (3) 841 people...

2 Answers · Science & Mathematics · 28/10/2010

Hi Let x be the number of dimes, then x*10 +(x+3)*5 +(x+3+2)*25 = 980 cent 40x = 840 cent x = 21 There were 21 dimes, 24 nickels, 26 quarters Regards

1 Answers · Science & Mathematics · 11/10/2010

You should expect to eliminate 50% of the coins each tip . (if a tip provides an equal chance of a dot or not which it appears...

1 Answers · Science & Mathematics · 14/08/2009

...pick any two of this three and weigh them against each other. the scale will either tip or if they balance, the other

**coin**from that group is lighter6 Answers · Science & Mathematics · 21/10/2008

...area distribution among coins , the physics (which regions of the

**coin**it has to land on in order to tip over/stay), maybe eve the physics, air resistance, the weight distribution of the**coin**...4 Answers · Science & Mathematics · 01/01/2011

...able to figure out how many fit the given conditions. Some

**tips**. - Each**coin**toss has exactly 2 possibilities. The Fundamental...3 Answers · Science & Mathematics · 27/09/2010

...x+ x + y = 10 (number of soins) .05x +.1x + .25y = 1.45 (value of coins ) 2x +y = 10 (1st equation rewritten) .15x + .25y = 1.45 (2nd equation...

2 Answers · Science & Mathematics · 08/04/2009

Divide the coins into threes. Weigh two sets of three coins . If...not, then you know which set contains the fake. From the set of three coins containing the fake, weigh any two. Just as above, if the weights...

4 Answers · Science & Mathematics · 04/01/2013

Assuming the coins have a symmetrical cross-section, and that the dot you put on one side does not change...quot;dot down" are both equally likely to happen. Now drop that one

**coin**100 times, and note the number of times you get "dot up...1 Answers · Science & Mathematics · 20/08/2009

The number of ways of taking 2 objects from a group of 5 is (5!)/((2!)*((5-2)!) = 120/(2*6) = 10

3 Answers · Science & Mathematics · 09/07/2009