Is there a such thing as ------------------1?

Question

My tutor said ther were --1s, but this?

Answer 1

From a purely abstract perspective, your tutor is correct; however, I doubt you need the purely abstract perspective. If we're interested in evaluating a real expression, we wouldn't write --1, we'd write -(-1). Then we would notice that -(-1) = 1, and now we've reduced the expression to 1. Likewise, we would reduce -(-(-1)) to -(1) = -1. In your answer to a problem, you would only use 1 or -1, never --1.

Answer 2

Yes, such a thing can exist, but every 2 minus
signs cancel each other out, so it comes
down to 1 or -1, depending on whether
the number of minus signs is even or odd.
Think of each minus sign as multiplication by -1.

Answer 3

Does your tutor drink a lot?

Answer 4

Absolutely not. You need a new tutor...

Answer 5

i thought it goes to just one negative then it ends.