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Find the remainder when the sum $2^{2} + 2^{6} + 2^{10} + 2^{14} + \cdots + 2^{110}$ is divided by 10.

 

Grogg multiplies four consecutive integers. What is the sum of all possible values of the units digit of his result?

 

 

Thanks for the help

 Sep 21, 2019
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Find the remainder when the sum $2^{2} + 2^{6} + 2^{10} + 2^{14} + \cdots + 2^{110}$ is divided by 10.

 

sumfor(n, 1, 110, 2^(( 2* (2 *n - 1)))) mod 10 = 0 

 

 

Grogg multiplies four consecutive integers. What is the sum of all possible values of the units digit of his result?

 

The result appears to be: 0 +4 =4

 Sep 21, 2019
edited by Guest  Sep 21, 2019

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