4 weighting
$1
$20, $10, $2, $2, 20c, 20c, 20c, 20c, 5c
3 dimes, 2 nickels, and 3 pennies
Using standard American coins (1, 5, 10, 25 cents), the fewest number of coins to make $0.13 would be four -- one dime and three pennies. This number would be different in countries that use different denomination coins, such as the 2-cent piece.
This is only possible if you allow adding coinsNumber of coins in row x Number of rows = total number of coins5 x 2 = 10 coins4 x 4 = 20 coinsYou would need 10 more coins
4
$1
Counterfeit coins and bills are often sold on eBay. You can also buy copies. Note: It is illegal to sell or pass counterfeit coins or bills
I think it's 0.35 cents. is that correct, perhaps?
Counterfeit coins and bills are often sold on eBay. You can also buy copies. Note: It is illegal to sell or pass counterfeit coins or bills
you are given three piles of 10 pesos coins. one pile is made up of counterfeit coins heavier than the genuine ones. explain how can pick out the pile of counterfeit coins in one step procedure using an equal arm balance
The details of the method depend on -- How many coins are there in the whole pile ? -- How many of those are counterfeit ? -- Are counterfeit coins heavier or lighter than genuine coins, or is that not known ?
It depends, many low quality counterfeit coins are simply made in lead and would be essentially worthless, but a few high-quality counterfeit coins are actually made out of silver and would be worth the silver value.
Counterfeit quarters
4 coins, 3 in a triangle (use your imagination) and the other on top in the centre
20%
I think it's 0.35 cents. is that correct, perhaps?