Mathematics
Senior High
Resolved
この問題で、どこが間違っているか分かりません。
教えて下さい。
次の和 Sを求めよ。
(2) 1+3+5+......+101
Ou= a+ch \) d.
-11(hy)×2.
=f1da-2
=2a-f
ba-1=101
2a= 100
n=50
Sa: A (atau).
=2/5x102
=2552
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