For Friday, bring lunch because I only order 3 XL pizza (juice and cookies) for the class. Champsi wants to have 4 slices as well.
Math: Find out how many area codes in New York State and California
- how many possible phone combinations in Deli, India (area code, slots in phone number)
- determine how many phone number in your home country (China, Iran, India, South Korea, Taiwan, Nigeria, Hong Kong). For example, Kwok's dad number in Hong Kong was
(852)-2712-3817
There are 8 x 10 x 10 x 10 x 10 x 10 x 10 x 10 = 80 million possible numbers in HK
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