I think the answer is 16 sorry if wrong
Answer:
Salim can simplify that and the answer will be 
Step-by-step explanation:
This is because of the law of multiplying powers, which states that you can add the exponents if the base is the same. So, you just add m and n and put that as the exponent and you will have the answer.
1/2 of 20 is 20/2 which is 10.
All you really need to do here is to divide 20 by 2 to get 10.
Answer:
c
the total number of marbles are 12 and there are 3 colours so you divide 12 by 3