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Q: 5, 13, 41, 85, 257, _____ 
A. 773 B. 516
C. 716 D. 736
E. 517

Answer and Explanation

Answer:517

Explanation:
5 2+3, 13 2 +3 , 41 2 + 3 , 85 3 + 7, 257 2 + 3, ________
The next number in the series is 257 x 2 + 3 = 517

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