He would maybe have 7.5 but I insist you the answer could be 8 too
Answer:

Step-by-step explanation:
As the numbers are only between 1 and 30
Total number of possible combinations = 30×30×30 = 27000
If there are 100 attempts then

∴ Probability someone can guess the correct combination given 100 attempts is 
He announced that the US would no longer convert dollars to gold at fixed value
Answer:
0
Step-by-step explanation:
edg 2020