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Complete the following series. 12 21 37 62 98 147 ? 1. 228 2. 211 3. 247 4. 196

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2.211

211

12+3^2=21 21+4^2=37 37+5^2=62 62+6^2=98 ... 147+8^2=211

It could be 211 difference between the tarms 4 squre then 5 squre and continue so it could be 211

Ans could be 101.088 and if not plz let me know if any have