Which number is the largest: 12, 7, 25, 19?

• A. 12
• B. 19
• C. 25
• D. 7

Answer: (C)

The largest number among the options is 25. When comparing the four numbers — 12, 7, 25, and 19 — it's important to examine them each in terms of their value. The number 25 surpasses the other three options significantly, as it is greater than 12, 7, and 19.

To determine which number is the largest, it is effective to arrange the numbers in ascending order: 7, 12, 19, and finally 25. This ordering clearly shows that 25 is the highest value. Such comparisons rely solely on numerical values, and in any set of numbers, finding the largest is a matter of simple comparison. Therefore, 25 is correctly identified as the largest number in this list.