讨论两道OG题。

Is the measure of one of the interior angles
of quadrilateral ABCD equal to 60 degrees?

(1)   Two of the interior angles of ABCD are right
angles.

(2)
            The degree measure of angle ABC is twice the
degree measure of angle BCD.

A. Statement (1) ALONE is
sufficient, but statement (2) alone is not sufficient.

B. Statement (2) ALONE is
sufficient, but statement (1) alone is not sufficient.

C. BOTH statements TOGETHER
are sufficient, but NEITHER statement ALONE is sufficient.

D. EACH statement ALONE is
sufficient.

E. Statements (1) and (2) TOGETHER
are NOT sufficient.

$10,000 is deposited in a certain account
that pays r percent annual interest compounded annually, the amount D(t), in
dollars, that the deposit will grow to in t years is given by D(t) = 10,000
{1+(r/100)}^t.  What amount
will the deposit grow to in 3 years?

(1)   D(t) = 11,000

(2)
                r =10

A. Statement (1) ALONE is
sufficient, but statement (2) alone is not sufficient.

B. Statement (2) ALONE is
sufficient, but statement (1) alone is not sufficient.

C. BOTH statements TOGETHER
are sufficient, but NEITHER statement ALONE is sufficient.

D. EACH statement ALONE is
sufficient.

E. Statements (1) and (2) TOGETHER
are NOT sufficient.