How to memorize 30+ numbers in 1min!

Try to
1. split numbers in to 3parts
2. From the first num to the last u need to imagine them as hights that correspond to their number whith 0 as lowest.
3. Learn first part, then second and first and second.
Formula: 1+2+1-2+3+1-2-3
3. You will soon find that you can clearlie see picture that is very logical and easy to distinguish.
Example: pi num. 3.141 should be remembered as high and slim 1 and small 4. I know this is not what i wrote above but you need to combine.
I remembered 190 num pi in one and a half hours.