What is the next term in the additive Fibonacci-style sequence: 2, 3, 5, 8, 13, 21, ___?
Answer and explanation
Correct answer: C. 34
- Step 1: Each term is the sum of the two preceding terms: 2+3=5, 3+5=8, 5+8=13, 8+13=21. Step 2. Next term: 13 + 21 = 34. Answer: 34, adding the two immediate preceding numbers 13 and 21. Why not the others: 31, 33, and 35 use arbitrary additions.
Practise more Number Series, Logic, Word Association and Analytical Data Interpretation.
Free questions with an explanation for every one, and full timed Philippine Civil Service Exam mock tests.
More Number Series, Logic, Word Association and Analytical Data Interpretation questions
- What is the next number in the arithmetic sequence: 4, 11, 18, 25, 32, ___?
- What is the next number in the geometric progression: 3, 6, 12, 24, 48, ___?
- What is the next term in the alternating number series: 5, 20, 8, 17, 11, 14, 14, ___?
- What is the next number in the series: 2, 5, 10, 17, 26, ___?
- What is the next number in the sequence: 1, 4, 13, 40, 121, ___?
- What is the next term in the decreasing sequence: 128, 64, 32, 16, 8, ___?