TASK DEFINITION: In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
PROBLEM: Carbon dioxide extinguishes fire by physically attacking all _ points of the fire triangle.

SOLUTION: three

PROBLEM: Black adults have three to _ times greater incidence of bacteremia, compared with white adults.

SOLUTION: five

PROBLEM: Water dissolves about _ part in seven thousand parts, and receives a brown color.

SOLUTION:
one