210, 70,...
- After the first term in the sequence above, each
odd-numbered term can be found by multiply-
ing the preceding term by three, and each
even-numbered term can be found by multi-
plying the previous term by 1/3. What is the
value of the 24th term? - The first two terms of a sequence are 640 and
- Each term after the first is equal to one-
fourth of the previous term. What is the value
of the sixth term?
6, 4,...
- After the first two terms in the sequence above,
each odd-numbered term can be found by divid-
ing the previous term by 2. For example, the
third term is equal to 4 ÷ 2 =2. Each even-
numbered term can be found by adding 8 to
the previous term. For example, the fourth
term is equal to 2 + 8 =10. How many terms are
there before the first noninteger term?
(A) 3
(B) 4
(C) 5
(D) 6
(E) 7
2, 4, 8,...
- The first three terms of a sequence are given
above. If each subsequent term is the product
of the preceding two terms, how many of the
first 90 terms are negative?
(A) 16
(B) 30
(C) 45
(D) 60
(E) 66
....1 2 3 4 5 7 8 9610 2 3 4 5 7 8 9610 2 3 4 5 7 8 9610 2 3 4 5 7 8 96....1 2 3 4 5 7 8 9610 2 3 4 5 7 8 9610 2 3 4 5 7 8 9610 2 3 4 5 7 8 96CHAPTER 11 / ESSENTIAL ALGEBRA 2 SKILLS 409