Warm-Ups


1	The arithmetic sequence 3, 1, -1, -3, -5, . . . has common difference 2.
		A)	TRUE
		B)	FALSE


2	The sequence 2, 5, 9, 14, 20, 27, . . . is an arithmetic sequence.
		A)	TRUE
		B)	FALSE


3	The sequence 2, 4, 2, 0, 2, 4, 2, 0, . . . is an arithmetic sequence.
		A)	TRUE
		B)	FALSE


4	The nth term of an arithmetic sequence with first term a₁ and common difference d is given by the formula a_n = a₁ + nd.
		A)	TRUE
		B)	FALSE


5	If a₁ = 5 and a₃ = 10 in an arithmetic sequence, then a₄ = 15.
		A)	TRUE
		B)	FALSE


6	If a₁ = 6 and a₃ = 2 in an arithmetic sequence, then a₂ = 10.
		A)	TRUE
		B)	FALSE


7	An arithmetic series is the indicated sum of an arithmetic sequence.
		A)	TRUE
		B)	FALSE


8	The series ∑(3 + 2i) from i = 1 to i = 5 is an arithmetic series.
		A)	TRUE
		B)	FALSE


9	The sum of the first n counting numbers is n(n + 1)/2.
		A)	TRUE
		B)	FALSE


10	The sum of the even integers from 8 through 28 inclusive is 5(8 + 28).
		A)	TRUE
		B)	FALSE

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