Brain Teasers
4, 3, 8/3, 9/4, 2, 2, 2, 15/8, 16/9, ?
What's the next number in this series?
4, 3, 8/3, 9/4, 2, 2, 2, 15/8, 16/9, ?
4, 3, 8/3, 9/4, 2, 2, 2, 15/8, 16/9, ?
Answer
9/5.The nth entry is the nth composite number divided by n.
4=4/1, 3=6/2, 2=10/5=12/6=14/7, 9/5=18/10.
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Comments
huh, these seem familiar...
Do you have any teasers that DON'T involve composite numbers?
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I don't know what you mean by a composite number. Maybe it's not taught like that in my country.
A little logical thinking gives the answer!
I predict the next one will be the nth composit number divided by the nth prime.
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