Praxis 5003 Practice Question
The first term of a sequence is 2. After the first term, each term in the sequence is -1/2 term. What is the fifth term in the sequence?
Correct Answer: C
Rationale: To find the fifth term in the sequence starting with 2 and decreasing by half each time, we apply the rule iteratively.
1. First term: 2
2. Second term: 2 - (1/2 * 2) = 2 - 1 = 1
3. Third term: 1 - (1/2 * 1) = 1 - 0.5 = 0.5
4. Fourth term: 0.5 - (1/2 * 0.5) = 0.5 - 0.25 = 0.25
5. Fifth term: 0.25 - (1/2 * 0.25) = 0.25 - 0.125 = 0.125
None of the options A, B, or D match this result. Option C, "01-Aug," appears to be a formatting error or irrelevant, but based on the calculations, none of the provided numerical options are correct. The sequence consistently halves the previous term, leading to a final result of 0.125.
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