Answer:
0
Step-by-step explanation:
Answer:
4
Step-by-step explanation:
He should add 4 black blocks because there are a total of 4 other blocks, and in order to have a probability of 50%, the number of black blocks needs to be equal to the total number of the other colored blocks.
Step-by-step explanation:
-8
hope it helps:-) :-) :-) :-)
