Next in the Series

Find the next number in the series?
2, 12, 36, 80, 150, 252, 392, _ ?




Similar Riddles

A bank customer had $100 in his account. He then made 6 withdrawals. He kept a record of these withdrawals, and the balance remaining in the account, as follows:

Withdrawals Balance left
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$25 $25
$10 $15
$8 $7
$5 $2
$2 $0
----- -----
$100 $99

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Okay before we begin with the puzzle, do keep in mind that you have to answer it quickly.

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Amazing Facts

No Solution

In 2007, a puzzle was released and $2 million prizes were offered for the first complete solution. The competition ended at noon on 31 December 2010, with no solution being found. Wiki