12,10,17,47,183,?
16,14,25,71,279,?
25,23,43,125,495,?
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Step-by-step explanation:
12 10 17 47 183
_ _ _ _ _
×1-2 ×2-3 ×3-4 ×4-5 ×5-6
so, 183 × 5 - 6= 909
carry this method in next to series
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