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We noticed you are actually not timing your practice. Click the START button first next time you use the timer.
There are many benefits to timing your practice, including:
1. f is odd the product of f x g can be odd or even therefore fg+2 can be odd or even even numbers are never prime fail 2. g is even the product of f x g must be even an even number plus an even number is an even number fg+2 is always even pass