Multiple choice general knowledge math & puzzles

3 10 21 44 65 102 ?

  1. 133

  2. 123

  3. 333

  4. 223

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The pattern follows +7, +11, +23, +21, +37, +31. The sequence of differences alternates between adding consecutive primes (7, 11, 23, 37) and adding consecutive odd numbers (21, 31). After 102 (which is 65+37), we add 31 to get 133. Alternatively, examining closely: 3→10 (+7), 10→21 (+11), 21→44 (+23), 44→65 (+21), 65→102 (+37), 102→133 (+31).