A math problem of HMMT,general part to GeorgeJosh takes a walk on a rectangular grid of n rows and 3 columns,starting from the bottom left corner.At each step,he can either move one square to the right or simultaneously move one square to the leftand
来源:学生作业学帮网 编辑:学帮网 时间:2024/06/21 13:00:50
A math problem of HMMT,general part to George
Josh takes a walk on a rectangular grid of n rows and 3 columns,starting from the bottom left corner.
At each step,he can either move one square to the right or simultaneously move one square to the left
and one square up.In how many ways can he reach the center square of the topmost row?
Note that Josh must pass through the center square of each row.There are 2 ways to get from the center square of row k to the center square of row k +1.So there are 2^(2n-1)ways to get to the center square of row n.
nothing added to our understanding of the math problem
the math problem was so difficult that none of us could work it outthe math problem was (-----)(-----)(------)(-----)(-----)of us (-----)(-----)(----)
more of a problem
he had a problem with math this week同义句
Look!Peter____ ____ ____(解答)a math problem
Look,Jim is working _____ a math problem.
( )the math problem( 0.
advanced math problem
sat math problem
一道 sat math problem
The math problem is so hard that only ( ) of us can work it out.A.a few B.few C.a little D.little
-Can you work out this math problem -Yes .___ A .It 's a piece of cake .B .Do please .C .It's too hard .D .Well done
The math problem is ( ?) hard. I need ( ?) time. A a bit ; a bit B a bit of ; a bitC a little of ; a little of D a little ; a little
i am sure you will be able to work out the answer__this math problem by yourself.a,of.b,for.c,to.d,about
it's not difficult 【 】us to work qut the math problem [ ] this way.a on at b in on c for ind with of
单选 :( ) none of us could solve the math problem,it is too difficult .A Hardly B Nearly C almost D Seldom请每个选项都解答为什么 ,
SAT math problem (这题我是不会做,a right triangle has perimeter 32 and area 20.what is the length of its hypotenuse?
i think there are some other ways of ____(work) out this math problem