129.Twitter上的趣题

Reader86 · 发表于 2022-6-6 10:46:35

本帖最后由 Reader86 于 2022-12-31 02:50 PM 编辑

Twitter上的一个趣题，

网友又设XYZ，又开方，太麻烦了。

我用一个Y，用勾股定理和相似三角形，根据图可以看出来，不细说了。

https://twitter.com/engineers_fe ... o_6a6qqk-CSNgwrjf2g

Reader86 · 发表于 2022-12-28 13:49:27

本帖最后由 Reader86 于 2022-12-29 11:32 AM 编辑

Can you solve this equation in less than 20 seconds?

1 + 4 = 5
2 + 5 = 12
3 + 6 = 21
8 + 11 = ?

There may be a lot of answers, but my answer is quick.

1 + 4 = 5       5+0=5
2 + 5 = 12    2 + 5 = 7       7 + 5 = 12
3 + 6 = 21    3 + 6 = 9       9 + 12 = 21
8 + 11 = ?    8 + 11 = 19    19 + 21 = 40

Therefore  8 + 11 = 40

https://twitter.com/engineers_fe ... g20XhXozbM62Ht3BP8w

		自动登录	找回密码
密码			注册