February 2023 0 29 Report
Exercice 9: calculer les sommes de suite géométrique suivantes :
a) 100+ 90+80+ ... +20 + 10
b) 2 +4 +6+ ... +96 +98
c) 15 +17+19+ ... + (15 + 2n)
d) 5+8+11+ ... +128 +131
e) 3+ 6 + 12 + ... +96
f) 500 + 300 + 180 + ... +500 × 0,6¹⁰
g) 100+ 150 +225 + ... + 100 × 1,5"
h) 1+3+6+ ... + 729 +2187​
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