Equivalence Partitions for Integer Values

(1) 9,999,Less than 10,000 (invalid)

(2) 10,000,Between 10,000 and 99,999 (valid)

(3) 50,000,Between 10,000 and 99,999 (valid)

(4) 99,999,Between 10,000 and 99,999 (valid)

(5) 100,000,More than 99,999 (invalid)

Explanation

The value partitions are: Less than 10,000 (invalid - not a 5-digit integer); Between 10,000 and 99,999 (valid - 5-digit integers greater than 10,000); More than 99,999 (invalid - 6+ digit integers). 10,000 is the boundary of the valid partition. 9,999 is just below and 100,000 is just above.