Seven Entry SeriesSeries teasers are where you try to complete the sequence of a series of letters, numbers or objects.
What is the next number in this series:
341, 39, 602, 50, 1003, 64, _______?
AnswerThe answer is 1420.
Looking at the 11th-20th primes, we do the following:
Multiply the prime by the Nth spot it holds,
average the next two primes, and repeat.
31x11 (341), average 37 & 41 (39), 43x14 (602), average 47 & 53 (50), 59x17 (1003), average 61 & 67 (64), 71x20 (1420).
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