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വിട്ടു പോയ സംഖ്യ കണ്ടെത്തുക 7,25,61,121, ______

A216

B221

C220

D211

Answer:

D. 211

Read Explanation:

7,25,61,121, ______ 7=8-1 = 2³-1 25=27-2 = 3³-2 61=64-3 = 4³ -3 121=125-4 = 5³ -4 6³ - 6 =216 - 5 =211

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