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Number series (next term): Apply a Tribonacci-type recurrence. Given sequence: 1, 3, 4, 8, 15, 27, ? Hint: each term equals the sum of the previous three terms (Tribonacci). Choose the correct next number.

Q: Number series (next term): Apply a Tribonacci-type recurrence. Given sequence: 1, 3, 4, 8, 15, 27, ? Hint: each term equals the sum of the previous three terms (Tribonacci). Choose the correct next number.

Concept Tribonacci: t(n) = t(n−1) + t(n−2) + t(n−3). Verify 8 = 4 + 3 + 115 = 8 + 4 + 327 = 15 + 8 + 4 Next term t = 27 + 15 + 8 = 50 Final Answer 50

Difficulty: Easy

Correct Answer: 50

Explanation:

Concept
Tribonacci: t(n) = t(n−1) + t(n−2) + t(n−3).

Verify
8 = 4 + 3 + 115 = 8 + 4 + 327 = 15 + 8 + 4

Next term
t = 27 + 15 + 8 = 50

Final Answer
50

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