Question

1) (-1) x (-1) X (-1)X ----- 39 times = a) 39 b) (-39) c) (-1)​

Answer 1

Answer:

1) 1*1*... any number of times = 1

2) -1*-1*...(even number of times) = 1

3) -1*-1*...(odd number of times) = -1

Therefore, (-1) x (-1) X (-1)X ----- 39 times = -1