To produce a particular radio model, it costs a manufacturer $30 per
radio, and it is assumed that if 500 radios are produced, all of them will be sold. What
must be the selling price per radio to ensure that the profit (revenue from the sales minus
the total production cost) on the 500 radios is greater than $8,200 ?

correct: B
The product of odd integers from -5 to 13 inclusive: -5 * -3 * -1 * 1 * 3 * 5 * 7 * 9 * 11 * 13
The product of even integers from -12 to 6 inclusive: -12 * -10 * -8 * -6 * -4 * -2 * 0 * 2 * 4 * 6
The first thing to check is if any of the products are negative. Else in case of having same sign (both negative or both positive, we will compare their values.)
A consists of 3 negative numbers, as 3 is odd, the result is negative.
B consists of 6 negative numbers, as 6 is even, the result must be positive, but there is a 0 in the product elements, so B equals to 0.
as A is negative and B is 0, B is bigger than A.

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