1-2+3-4+8+10+...+165 =
Matematika
Lijazivanka
Pertanyaan
1-2+3-4+8+10+...+165 =
1 Jawaban
-
1. Jawaban Anonyme
(1 - 2) + (3 - 4) + ... + (163 - 164) + 165
= (-1) × 164/2 + 165
= (-82) + 165
= 83