Brain Teasers
1, 1, 2, 3, 6, 7, 10, 11, 14, ?
What's the next number in this series?
1, 1, 2, 3, 6, 7, 10, 11, 14, ?
1, 1, 2, 3, 6, 7, 10, 11, 14, ?
Answer
19.The nth entry is the nth prime number minus n.
1=2-1, 1=3-2, 2=5-3, 3=7-4, 6=11-5, 7=13-6, 10=17-7, 11=19-8, 14=23-9, 19=29-10.
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