Which one is missing? 16,33 ,65,131,_______

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വിട്ടുപോയത്‌ ഏത് 16,33 ,65,131,________

A106

B121

C189

D261

Answer:

33=16×2+1 65=33×2−1 131=65×2+1 131×2−1=262−1=261

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