In the sequence of nonzero numbers ~$t_1, t_2, t_3, \ldots, t_n; t_{n+1} = t_n / 2$~for all positive integers ~$n$~. What is the value of ~$t_5$~?
(1) ~$t_3=\frac{1}{4}$~
(2) ~$t_1-t_5 = \frac{15}{16}$~
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.
这个分号什么意思啊,是打错了吗
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