Predict the data type of the given Python statement:

a=42.85
b=int(a)
print(type(b))

Predict the data type of the given Python statement:

m=12E4
print(type(m))

Predict the data type of the given Python statement:

n=0.0025
print(type(n))

Predict the output of the following code:

def Add(num1, num2):
    sum = num1 + num2
sum = Add(20, 30)
print(sum)