# House and ending: the 10×10 grid
Every teer result has two digits, and players split them. The first digit is the house. The second is the ending. In 47, the house is 4 and the ending is 7.
Why split them? Because it creates cheaper ways to play. A direct bet on 47 wins only if the result is exactly 47 — one number out of a hundred. A house bet on 4 wins if the result is any of 40, 41, 42, 43, 44, 45, 46, 47, 48, 49 — ten numbers out of a hundred. An ending bet on 7 wins on 07, 17, 27, 37, 47, 57, 67, 77, 87, 97 — also ten out of a hundred. Ten chances instead of one, with the payout scaled down to match.
Picture the grid. Ten rows, ten columns — one hundred cells. Each row is a house (row 4 holds 40–49). Each column is an ending (column 7 holds 07–97). Every possible result sits in exactly one cell. Pick a house and you've picked a row: ten cells, a 10% slice of the grid. Pick an ending and you've picked a column: the same 10%.
The diagonal is where the doubles live: 00, 11, 22, 33, 44, 55, 66, 77, 88, 99. Ten cells running corner to corner. Some players love doubles for the symmetry; the grid shows the truth — ten cells out of a hundred, the same 10% as any other house or ending.
The honest arithmetic: a house or ending bet wins about one time in ten. A direct number wins about one time in a hundred. The payouts are set so that neither is a bargain — the counter isn't offering discounts. The grid doesn't reveal a secret; it reveals the price list. Use it to understand what you're buying, not to find an edge. There is no edge in the grid — it's just the hundred possibilities, drawn neatly.
Players pair the grid with charts, tracking which houses and endings appeared most in recent weeks. That's fine as a pastime — the grid makes the counting tidy. Just remember what the grid can't do: it can't make row 4 likelier tomorrow because it appeared often last week. Each round re-deals the whole hundred cells.