If s and t are two different numbers on the number line, is s + t equal to 0 ?
(1) The distance between s and 0 is the same as the distance between t and 0.
(2) 0 is between s and t.
Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
EACH statement ALONE is sufficient.
Statements (1) and (2) TOGETHER are NOT sufficient.