Answer
As per the rules of rounding,
a). If the first digit to be dropped is less than 5, leave the preceding digit as is.
b). If the first digit to be dropped is 5 or greater, increase the preceding digit by one.
So, 5 is chosen to be the major digit for rounding.
Work Step by Step
As per the rules of rounding,
a). If the first digit to be dropped is less than 5, leave the preceding digit as is.
b). If the first digit to be dropped is 5 or greater, increase the preceding digit by one.
So, 5 is chosen to be the major digit for rounding.