Glove scrolling probability help

1/

basicly, you have a 1% chance of landing two 10%s in a row. so with 90 10%s you would have 9 3atk 4slots, and 10 slots left over.

so you'd have a 9/10 chance to have a single 6atk 3slot glove if youd think about it and a single scroll left. if youd scroll at average rate and be not lucky nor not unlucky.
to theoretically have a 6atk 3slot glove, you need 110 10% scrolls.

You can't add probability.

Chance of 9 10%s failing in a row = 38%, so that means the odds of at least 1 working is only 62%. Of course that includes multiple successes. But those are only a small fraction.