Which number will replace the question mark (?) in the following series?
49, 81, 121, 169, ?, 289
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 225.
Pattern: Square of odd numbers starting from 7.
49 = 72
8 = 92
121= 112
169 = 132
225 = 152
289 = 172
So, the next term would be 152 = 225.
Hence, the correct answer is 225.