Select the number from among the given options that can replace the question mark (?) in the following series. 45 95 245 695 ?
2045
The correct answer is option 1 i.e. 2045.
Differences: \(95-45=50,\ 245-95=150,\ 695-245=450\); each difference is tripled. Next difference \(= 450 \times 3 = 1350\). So \(? = 695 + 1350 = 2045\).
Hence option (1).
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