Question

娕町

想求此題詳解，謝謝><

說  還     計生說 及1 / 2

1 有一等差數列共有 20 項,已知奇數項的和比偶數項的和多 20,則此等差數列的公差為

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還了

‧ /人人 卅作hd日用計生

Answer 1

✨ 最佳解答 ✨

Simon White

Tell me if there is any problem, Tks

BTW, I do speak Chinese ,but I have a disability typing them

娕町

Ok,I see.
I think I'm understand,thank you~~~
Are you come from China?It's simplified Chinese.

Simon White

Nah, I am from Taiwan🙂🙂

娕町

??!!
那可以打中文嗎？
加油啦💪