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Q: 7,11,20, 36,61, ____ 146
A. 25  B. 91 
C. 97  D. 92 
E. 122

Answer and Explanation

Answer:97 

Explanation:
 7+4 11+9, 20+16, 36 +25, 61 , 146 The differences are
squares of consecutive natural numbers, in increasing
order starting with 2, i.e., 22 = 4. Hence, the next number
in the series is 61 + 36 = 97

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