What is missing from this sequence: 75, 15, ??, 5, 15, 3, 13
Great, you answered "45".
See here what other people have answered:
- 10
- 30
- 45
- 25
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Interesting fact:
IQ has been shown to increase with better schooling, better educated parents and better toys. Interactive toys prove to be helpful because they train different parts of the brain.