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What should come in place of the question mark (?) in the following number series?

40, 41, 84, 255, 1024, ?


1. 5125
2. 5075
3. 5175
4. 5025
5. 5235

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Best answer
Correct Answer - Option 1 : 5125

Given:

40, 41, 84, 255, 1024, ?

Calculation:

⇒ 40 × 1 + 1 = 41

⇒ 41 × 2 + 2 = 84

⇒ 84 × 3 + 3 = 255

⇒ 255 × 4 + 4 = 1024

⇒ 1024 × 5 + 5 = 5125

∴ The value of ? is 5125.

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