SAT Subject Test Mathematics Level 2

(A) I   only

(B) II  only

(C) I   and II  only

(D) I   and III only

(E) I,  II, and III

9 . There   are 7   orange  disks   and 5   green   disks   in  bag X   and there   are 5   orange  disks   and 15

green   disks   in  bag Y.  If  one disk    is  selected    at  random  from    each    bag,    what    is  the

probability that    both    disks   selected    are green?

(A)

(B)

(C)

(D)

(E)

10 . The terms of a sequence are defined by an = 3an−1 − an−2 for n > 2. What is the value of a 5 if
a 1 = 4 and a 2 = 3?

(A) 12

(B) 23

(C) 25

(D) 31

(E) 36

11 . If , then what is the value of ?