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What should come in place of the question mark '?' in the following number series? 500, 755, 1520, 3815, ?

What should come in place of the question mark '?' in the following number series? 500, 755, 1520, 3815, ? Correct Answer 11465

The pattern of the given series is

⇒ 755 = (500 × 1.5) + 5

⇒ 1520 = (755 × 2) + 10

⇒ 3815 = (1520 × 2.5) + 15

⇒ The next term will be = (3815 × 3) + 20 = 11465

∴ ? = 11465

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