Question

The number(s) that appear(s) most often in a set of data

a ratio that compares a number to 100 (or per hundred)
a decimal that contains digits that continue forever in a pattern
the middle number of a set of data when it is arranged in numerical order
metric unit used to measure length
a mathematical statement containing an equal sign
the answer to a division problem

Answer 1

The number(s) that appear(s) most often in a set of data

The answer is C,
the middle number of a set of data when it is arranged in numerical order

metric unit used to measure length

I hope this is the answer, your welcome if I'm right.