alleryFor the after-school survey, how many friends should you ask?
A30
B40
C10
D20
Answer & Solution
Correct answer: C. 10
1. The practice exercise sets the size of the survey.
2. Ask 10 of your friends what they like to do most after school.
3. So the correct answer is 10.
_Source: syllabus Mathematics, 'Math-Magic', Ch 12 'Smart Charts'_
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