Make Zero

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POP NUMBERS AND MAKE ZERO!
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HOW TO PLAY - EASY:
* Tap numbers and see if it pops


HOW TO PLAY - COMPLICATE:
* The sum of zero and a negative number is negative, the sum of a positive number and zero is positive, the sum of zero and zero is zero.

* A negative number subtracted from zero is positive, a positive number subtracted from zero is negative, zero subtracted from a negative number is negative, zero subtracted from a positive number is positive, zero subtracted from zero is zero.

* If we subtract a positive number from zero the same negative number remains. ... if we subtract a negative number from zero the same positive number remains.

* ... the mathematical conception of zero ... was also present in the spiritual form from 17 000 years back in India.