The correct form of the number is "26."
How to explain
This number is accurately represented in words as "twenty-six." Using the numeral "26" is the standard numerical representation of this value.
"Twenty-six" denotes the numerical quantity as a written-out form, reflecting the numeric value of 26.
"Twenty-six" represents the written form of the numeric value 26, spelling out the quantity in words rather than using the numerical symbol, reflecting the numerical value in text format.
The alternatives "twenty 6" and "20 six" do not accurately portray the numerical value of 26; the correct and universally accepted representation in numerical form remains simply as "26."
The Complete Question
Write the correct form of the number in the text box. (Write only the correct form of the NUMBER.) (26, Twenty-six, twenty 6, 20 six)