Single Answer MCQ
Q-00052013
What are the first three terms of the sequence defined by a_n = 2n + 3?
1
5, 7, 9
2
6, 8, 10
3
7, 9, 11
4
8, 10, 12
Answer and Solution
Answer
C. 7, 9, 11
Solution:
For n = 1, a_1 = 2(1) + 3 = 5; for n = 2, a_2 = 2(2) + 3 = 7; for n = 3, a_3 = 2(3) + 3 = 9. So the first three terms are 5, 7, and 9.
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