Multiple choice

The first three terms of a sequence are 3,3,6 and each term after the second is the sum of two terms preceding it, the 8th term of the sequence is

  1. 15

  2. 24

  3. 39

  4. 63
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Sequence: 3, 3, 6, 9, 15, 24, 39, 63. Each term is the sum of the two preceding terms (Fibonacci-like).

AI explanation

Following the rule that each term after the second is the sum of the two terms preceding it, we calculate the subsequent terms. The fourth term is 3 plus 6, which equals 9. The fifth term is 6 plus 9, which equals 15, and the sixth term is 9 plus 15, which equals 24. Continuing this pattern, the seventh term is 15 plus 24, which equals 39. Finally, the eighth term is 24 plus 39, resulting in 63.

Keep practicing — related questions