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CALCULEAZA SUMA 2+4+6+.....+102

Răspuns :

MariaDN
S=2+4+6+.....+102
S=2( 1+2+3+..+51)
S= 2×[tex] \frac{51*52}{2} [/tex]
S=2×[tex] \frac{2652}{2} [/tex]
S=2×1326
S=2652
Baftă!
Junila
S=2+4+6+...+102 S=102*103:2 S=10506:2 S=5253

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