A 3*3 matrix has 9 elements , and each element can be either 0 or 1 i.e. it can be occupied in two ways. so by fundamental principal of multiplication , we get 2*2*2*.......(9 times) = 512
Time is money, Money is the root of all evil, and knowledge is power. Therefore, Procrastination is the key to world peace.
Moderation Team
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