Select the number from among the given options that can replace the question mark (?) in the following series.
383, 381, 377, 369, 353,?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 321.
383 - 2 = 381; 381 - 4 = 377; 377 - 8 = 369; 369 - 16 = 353; 353 - 32 = 321