Discussion

Explanation:

The given sequence is a combination of two APs.

The first AP is (2, 5, 8, …) and the second AP is (3, 7, 11, … )

∴ Sum = 10/2 × (2 × 2 + 9 × 3) + 10/2 × (2 × 3 + 9 × 4) = 365

Hence, 365.

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