Even & Odd Numbers

Pick a value to view its full reference table.

Parity of numbers 1 through 10. Even numbers end in 0, 2, 4, 6, or 8; odd numbers end in 1, 3, 5, 7, or 9.

Parity is the coarsest useful classification of integers: even numbers divide by 2, odds leave a remainder of 1. The classification is stable under arithmetic — even + even, odd + odd, and even × anything stay even; an odd factor is what keeps a product odd; subtracting an odd flips parity. Because only the final digit matters, parity checks keep working on numbers too big to read aloud — one reason cashiers and programmers still lean on them.

All 10 even & odd numbers pages include a full data table, a worked explanation, and related calculators. Start withthe first 10or jump straight to the value you need below.

• First 10
• First 20
• First 30
• First 40
• First 50
• First 60
• First 70
• First 80
• First 90
• First 100