Today, when you order "Quadratic by Vinny Sagoo (Neo Magic)", you'll instantly be emailed a Penguin Magic gift certificate. You can spend it on anything you like at Penguin, just like cash. Just complete your order as normal, and within seconds you'll get an email with your gift certificate.
1. TIES: The Invisi..
| Price: | $7.00 |
Divide and Conquer!
Calculate the impossible with this math based mental miracle!
With the quadratic system, you can divide a random 7 digit number into quarters, within a matter of seconds.
This will make you look like a math genius and is perfect for stage, close-up, parlor and even online!
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