Select the number from among the given options that can replace the question mark (?) in the following series.
123, 98, 82, 73, 69, ?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 68
123, 98, 82, 73, 69, ?
123-(5)2 = 98
98-(4)2 = 82
82-(3)2 = 73
73-(2)2 = 69
69-(1)2 = 68
Hence, the correct answer is 68.