1 Girl comes in!!!!!!!!!! 40

If it's not white or black, then choose "white"!

Aquamarine polo

First, although white is also the most classic, it feels more ordinary.

Second, although pink is good, it is indeed not a girl's patent, but it is very difficult to wear pink to feel that it is both elegant and academic, anyway, I have never seen a boy who makes me feel that wearing pink is not disgusting.

The white man wears pink, the resolute and steady wears blue, and the simple and elegant wears white. In fact, if you have the money, buy a few more pieces of different colors, it is not recommended to buy white ones, because it is easy to get dirty in summer and it is not easy to wash (if you want to wash his clothes).

How many times do you have to ask questions when buying a dress? What's wrong with you?

Ocean Blue. That would be refreshing.

I even like to wear pink boys, but not everyone wears that effect

It's all good-looking! Just go white!

Pink, generally like you're not very white or black, it should be good to wear, it feels very bright, very youthful, very yang.

You asked again. It's all said to be in vain.

Boys wear a lot of white, but in the summer I think boys wear pink very good-looking, very eye-catching, there are very few boys who wear pink, but it is not a girl's patent, you can also wear personality characteristics, neither white nor black is just right.

5^2-3^2=8*2

The rule is that the square difference of two consecutive odd numbers is a multiple of 8.

i.e.: (2n+1) 2-(2n-1) 2=8n proof: (2n+1) 2-(2n-1) 2=(2n+1+2n-1)(2n+1-2n+1)=8n

2 square in 2011 - 2 square in 2009 = 8 * 1005 = 8040

The pattern is obvious, that is.

2n+1)*(2n-1)=8n

According to the law, get.

2n+1=2011

2n-1=2009

So n=1005

Therefore, 2011 2-2009 2=8*1005=8040 back to the first floor, if this law is to be proved, it is better to use mathematical induction to induct the basis when n=1 is established.

Assuming that (2k+1) 2-(2k-1) 2=8k is obtained, then [2(k+1)+1] 2-[2(k+1)-1] 2=(2k+3) 2-(2k+1) 2

2(4k+4)

8(k+1)

So (2n+1) 2-(2n-1) 2=8n holds.

3 of 2 squared - 1 = 8 i.e. 3 squared - 1 squared = 8 (3-1) 2 square of 25 - 2 square of 3 = 16 = 8 (5-1) 2 square of 27 - 2 square of 5 = 24 = 8 (7-1) 2 square of 29 - 2 square of 7 = 32 = 8 (9-1) 2 From this, it can be seen that the square of 2011 - the square of 2009 = 8 (2011-1) 2 = 8 1005 = 8040

2011²-2009²=（（2009-1）÷2+1）×8=8040

There is a rule: the answer to each formula is equal to: the subtracted base 2+1 multiplied by 8