15. The world's first supranational organization, was established after World War I.
It was initiated by U. S. president Woodrow Wilson, but because the U. S. did not actually sign it, the organization was
not very effective.

How many countries have portuguese as a national language?

Brian's school locker has a three-digit combination lock that can be set using the numbers 5 to 9 (including 5 and 9), without repeating a number. the probability that the locker code begins with a prime number is %. the probability that the last digit of the locker code is an odd number is %.

How would you find the measure of one interior angle