12+14+16+18+...+92 va rog frumos am nevoie urgent

Răspuns :

12 + 14 + 16 + 18 +...+ 92

aflam cati termeni are suma :

(92 - 12) : 2 + 1 = 80:2 + 1 = 41

( 12 + 92) × 41 : 2 =

104 × 41 : 2 =

52 × 41 =

2 132
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