Multiple choice

30,45,75,105,165,............

  1. 185

  2. 175

  3. 195

  4. 215
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The differences are: 45-30=15, 75-45=30, 105-75=30, 165-105=60. These follow a pattern of ×2, ×1, ×2. The next difference could be 60. Therefore, 165 + 30 = 195, or the pattern relates to multiplying by odd fractions.

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