Respuestas

2012-10-08T06:59:20+02:00

1²=1
11²=121
111²=12321
Entonces:
S=(1111...1)²=123456787654321
Rpta:2(1+2+3+4+5+6+7)+8=64

 

2012-10-08T06:59:21+02:00

1^2=1

11^2=121

111^2=12321

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11111111^2=123456787654321

la sumatoria de los digitos sera: 64 Resp b)