A system is designed to accept values of examination marks as follows:Fail: 0–39 inclusivePass: 40–59...

Equivalence partitioning is a testing technique that divides input data into partitions of equivalent data from which test cases can be derived. The goal is to ensure that at least one value from each partition is tested. The partitions for the examination marks are:

Fail: 0–39

Pass: 40–59

Merit: 60–79

Distinction: 80–100

In set B (0, 45, 79, 87), each value belongs to a different equivalence partition:

0 (Fail)

45 (Pass)

79 (Merit)

87 (Distinction)