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15 numbers must be inserted between 1950 and 1998, so that it can form an equal difference sequence. What is the sum of all the values?

 Mar 21, 2020
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1998 - 1950 =48 / 14 =3 3/7 - common difference

 

[1950 + 1998] / 2 x 15 =29,610

 Mar 21, 2020

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