Answer:
first and second one, and fourth one
Step-by-step explanation:
8505. You would do 63 times 135 to get 8505
I got 19,683. I hope this helps.
The solution is in the attached file
60 because 2:4 is 1/2, and when you divide by a fraction, you multiply by the reciprocal (2/1 instead of 1/2) which would be 60 in this case.