The next number in the series 2,5,11,20,32,47, is

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The next number in the series 2,5,11,20,32,47, is

• 2 + 3 = 5
• 5 + 6 = 11
• 11 + 9 = 20
• 20 + 12 = 32
• 32 + 15 = 47

Notice the addition pattern:
3, 6, 9, 12, 15

This means our next term is:
47 + (15 + 3)
47 + 18
65