Logical Problems - Verbal and Reasoning

Directions to SolveEach problem consists of three statements. Based on the first two statements, the third statement may be true, false, or uncertain.
Q1:

Battery X lasts longer than Battery Y.
Battery Y doesn't last as long as Battery Z.
Battery Z lasts longer than Battery X.
If the first two statements are true, the third statement is

A true

B false

C uncertain

ANS:C - uncertain

Explanation: The first two statements indicate that Battery Y lasts the least amount of time, but it cannot be determined if Battery Z lasts longer than Battery X.