a1 , a2 , a3 , . . . , a15
In the sequence shown, an = an - 1 + k, where ~$2\leq n\leq 15$~ and k is a nonzero constant. How many of the terms in the sequence are greater than 10 ?

(1) a1 = 24
(2) a8 = 10

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.