You are given a 8 8 board. the 4 corner squares are initially black, while the rest are initially white. an operation is to flip the colors of all squares in a single row or a single column. does there exist a sequence of operations to make the entire board black? if so, give an example; if no such sequence exists, explain why.

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step-by-step explanation:

since the sequence is geometric there is a common ratio r between consecutive terms, that is

r = 4 ÷ - 2 = - 2

r = - 8 ÷ 4 = - 2

r = 16 ÷ 8 = - 2

the next term - 13 must be incorrect as it should be - 32 for the sequence to be geometric.

the first 4 terms are therefore geometric with common ratio r = - 2

sure i'm up for it

step-by-step explanation: