Brain Teasers
3, 5, 8, 11, 16, 19, 24, 27, 32, ?
What's the next number in this series?
3, 5, 8, 11, 16, 19, 24, 27, 32, ?
3, 5, 8, 11, 16, 19, 24, 27, 32, ?
Answer
39.The nth entry is the nth prime number plus n.
3=2+1, 5=3+2, 8=5+3, 11=7+4, 16=11+5, 19=13+6, 24=17+7, 27=19+8, 32=23+9, 39=29+10.
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Comments
Good one!! Nice job!
Really, really tough!
Once the series got going, it seemed to be alternating adding 3 then 5, but that doesn't explain the first two entries. Good one.
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