Allár R + T si : R = 1 + 2 + 3 .... + 20
T = 1 + 2 + 3 .....+ 40
T = 1 + 2 + 3 .....+ 40
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Respuesta:
1030
Explicación paso a paso:
R= n(n+1)÷2
R=20(21)÷2
R=210
T=40(40+1)÷2
T=40(41)÷2
T=820
T+R=210+820=1030