1/3=2/6=4/12=8/24=16/48=32/96

2/5=4/10=8/20=16/40=32/80=64/160

3/4=6/8=12/16=24/32=48/64=96/128

Which numerator is missing in each fraction and how do you know?

Why do ratios use multiplication

A recent poll of 380 randomly selected Americans showed that 24% ( = 0.24) are happy with their cell phone carriers. The country's largest cell phone carrier would like to know, within a 90% confidence level, the margin of error for this poll.

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16/1337 answer of division