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17,18, 22, 31, 47, ?

17,18, 22, 31, 47, ?
54.8k views
5 votes
17,18, 22, 31, 47, ?

User Bunni
by
8.6k points

2 Answers

6 votes

Answer:

56

Explanation:

User Mike Martin
by
8.1k points
13 votes

Answer:

72

Explanation:

Goes like this:

  • 17+0=17
  • 17+1=18 (1=1^2)
  • 18+4=22 (4=2^2)
  • 22+9=31 (9=3^2)
  • 31+16=47 (16=4^2)
  • 47+25= 72 (25=5^2)

Notice: Here we have squares as difference.

User YurkoFlisk
by
8.1k points
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