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The sum of 1+2+3+4+5+6+7+8+9+10+11+12 is divisible by how many natural numbers between 1 and 10?

 Jun 12, 2021
 #1
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+1

Sum =   (12)(13)  / 2  =   78

 

Divisible  by   1, 2, 3, 6 

 

(I assume  that 1 and 10  are inclusive)

 

cool cool cool

 Jun 12, 2021

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