seven
In a game of double solitaire with 4 piles, a total of 8 piles are used.
8
40
1
Many computers come pre-loaded with games, and usually solitaire and spider solitaire are included. To find downloadable solitaire games, WorldofSolitaire's website has over 50 varieties of the game.
A standard Jenga game has 54 levels.
One
A standard deck of 52 cards can be split into equal piles based on the divisors of 52. The divisors of 52 are 1, 2, 4, 13, 26, and 52, which means there are six ways to split the deck into equal piles: one pile of 52 cards, two piles of 26 cards, four piles of 13 cards, and so on. Therefore, there are a total of six distinct ways to split a deck of cards into equal piles.
In a standard game of chess, there is only one checkmate.
My kids found out that 40,000 leaves fit in one of the tall paper bags. They did this by first making three piles of 100 leaves which they counted, then making 10 piles of 100 leaves to make 1000. Then they made 9 more piles of that size to see how much 10,000 was. Then they made 3-4 of those piles and started filling a bag. They got 4 of the piles in so that's how we get 40,000. Discounting systematic errors, I would expect the standard deviation to be about 20% based on propagating the standard deviation of the initial three piles of 100. I would say the worst case is 100% error or a factor of 2.
About 3-10 hours a day!
5 ways the factors of 52 are 13, 2, and 2 a deck can be divided into 52 piles of 1, 26 piles of 2, 13 piles of 4, 4 piles of 13, and 2 piles of 26