September 20, 1985?

September 20, 1985?

If it's a letter, it depends on the person to whom it is written. The general requirement of business letter is not to be abbreviated, so it's 20 september1985; ordinary is 20 september1985; or 20 / 09 / 1985; september20 1985. But for example, if it's British English, it's 3 september1985 and the United States

September 4, 1999
fast

On September 4,1999.

The ratio is 58:15 / 16

If you divide the two sides by 15, you get 870:16 = 435 / 8 = 54 and 3 / 8

Find the rule 9,16,30,58, ()

9,16,30,58,(114)
Rule: use the number of the front side × 2-2 as the number of the back side;