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Sequences

Sequences

Sequences: Because We'd Rather Start Counting from Zero Quiz

Think you’ve got your head wrapped around Sequences? Put your knowledge to the test. Good luck — the Stickman is counting on you!
Q. A sequence is


a list of numbers.
an infinite list of numbers.
an infinite list of terms separated by commas.
a list of numbers where the nth number is given by a mathematical formula.
Q. A sequence is defined by

Find a2.



4
Q. Let an be the decimal expansion of  correct to n decimal places.

Find a1.



3
3.3
3.33
3.333
Q. Which formula gives the general term for the sequence of positive odd numbers if we start the sequence at n = 0?


an = 2n + 1
an = 2n – 1
an = 2(n + 1)
an = 2(n – 1)
Q. Find the formula for the general term of the sequence

0, -10, 20, -30, 40, -50

if we start with n = 0.



an = 10(n – 1)
an = (-1)n – 110(n – 1)
an = (-1)n10n
an = (-1)n + 110n
Q. Give the formula for the general term of the sequence

starting with n = 1.



Q. Which of the following descriptions produce the sequence of natural numbers

1, 2, 3, 4,... ?

(I) an = n starting at n = 1
(II) an = n – 1 starting at n = 1
(III) an = n starting at n = 0
(IV) an = (n + 1) starting at n = 0



I and II
I and IV
II and III
III and IV
Q. Find the general term of the sequence

0.5, 2, 4.5, 8, 12.5, ...

starting with n = 1.



an = 1.5n – 1
Q. Which description produces the sequence 0,6,24,60,... ?


an = 6n2 starting at n = 0
an = 6n2 starting at n = 1
an = n3 n starting at n = 0
an = n3 n starting at n = 1
Q. Find the general term for the sequence

starting with n = 1.