There are 7 ones on the left and only 2 on the right. The two sides need to be even, or balanced.
7 = 2 + r
r = 5
Hope this helps!
3200 doubled would be 6400
Sorry I don’t see any images or diagrams I’m not sure
Answer: 0.0473
Step-by-step explanation:
Given : The proportion of gambling addicts : p=0.30
Let x be the binomial variable that represents the number of persons are gambling addicts.
with parameter p=0.30 , n= 10
Using Binomial formula ,

The required probability = 
Hence, the required probability = 0.0473
3
1
390
x 42
-------
1282
1564
----------------
the answer would be 16380
Hope this helped :)