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How many multiples of 7 are there between 200 and 1,200?

 Dec 21, 2017
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N = [L - F] / D + 1, Where N=number of terms, L=Last term, F=First term, D=Common difference.

N =[1,197 - 203] / 7 + 1

N =[  994  ] / 7 + 1

N =  142 + 1

N = 143

 Dec 21, 2017

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