113, 225, 449, ? , 1793

A 897

B 789

C 987

D 978

Solution

Correct Answer: Option A

113
113 * 2 = 226 -1 = 225
225 * 2 = 450 -1 = 449
449 * 2 = 898 - 1 = 897
897 * 2 = 1794 -1 = 1793

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