Question

All 28 standard domino tiles are put in a row according to the domino rules, such that the last number of the last domino tile is equal to 5. What is the first number of the first domino tile?

a) 0
b) 1
c) 2
d) 3

Answer 1

The first number of the first domino tile in the row is 2.

Step-by-step explanation:

In a standard set of dominoes, each tile has two numbers on it. The goal is to place the tiles in a row such that the last number of the last tile is equal to 5. In this case, the first number of the first tile can be determined by finding a tile with a 5 as its last number.

Since each tile has two numbers, we know that the first number of the first tile will be a number between 0 and 9.

1. Look at the 5 on the last tile and find the corresponding number on the same tile.
2. This will be the first number of the first tile in the row.

Therefore, the first number of the first domino tile is 2.