Answer:
26 1/2 is not equivalent to and integer but it can be approximated to 27 which is an integer.
Explanation
An integer is a whole number. It is a number that is not a fraction.
253/2=25+3/2=25+1 1/2=26 1/2
26 1/2 is not equivalent to and integer but it can be approximated to 27 which is an integer.
It would be a 1/5 chance so maybe 10
His brother is 2 years old
Ill take a guess of... idk. the second or the third one.