Multiple choice

Find the next term in the series. 30 45 15 60 0 ?

  1. 100

  2. 15

  3. 90

  4. 75
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The series alternates between adding and subtracting increasing multiples of 15: +15, -30, +45, -60, +75. Starting from 30: 30+15=45, 45-30=15, 15+45=60, 60-60=0, so 0+75=75. Option D is correct.

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