# Yahoo Web Search

1. ### pigeonhole principle - prove that, if n>(m+k−1)C(k−1)?

...walk is decided  by the combination of x1, x2, ..., xk.    So count the number of ways of dividing m into k non-zero ...

1 Answers · Science & Mathematics · 06/02/2020

2. ### Is there any relationship between memorizing numbers and obscure details and mathematical / computational ability?

...10 from which you can understand all the numbers in base 10 counting . But I suppose memorizing numbers... powers of 2: https://www.youtube.com/watch? v =uCsD3ZGzMgE

2 Answers · Science & Mathematics · 05/11/2016

3. ### Rules of inference and equivalence question?

... v S [1, commutation] 8. S [7 and 6, disjunctive syllogism] 9, S v T [8, addition] You can count on the addition rule coming into play when you see a variable that wasn't anywhere...

1 Answers · Science & Mathematics · 14/10/2015

4. ### if there are 24 students. how many handshakes would there be? grade 7?

...have to shake hands with A, B, D, ..., T, U, V , X. etc. The only problem is you would double- count every single handshake. You'd not only count A shaking ...

4 Answers · Science & Mathematics · 07/06/2015

5. ### So what’s the trajectory in velocity space?

... body R = a - f = distance from focus to perihelion VR = vr, where V = max velocity, v = angular velocity of orbiting body s = - (b/a) ( x/√(a²...

2 Answers · Science & Mathematics · 29/01/2014

6. ### How many seconds must a passenger count clicks to equal the exact speed of the train, in kilometres per hour?

... that speed, with one click = 10 m, we get (5/18) V m/s x (1click/10m) = (5/180) click/s = (1/36) clicks...the problem: "how many seconds must a passenger count clicks to equal the exact speed of the train"...

2 Answers · Science & Mathematics · 08/01/2014

7. ### The degree sequence of a tree is (1,1,...,1,2,3,4,4,5). Determine the number of 1's in the sequence.?

... of 1s in the degree sequence. If we add up all the terms, we count every edge twice. Since this is a tree, the number of edges is v -1. Thus ( v -5)(1) + 2 + 3 + 4 + 4 + 5 = 2( v -1). Hence v = 15.

1 Answers · Science & Mathematics · 16/10/2013

8. ### finding eigenvector from this matrix?

...λ2=2+5i. λ1*E-A= -5i 5 -5 -5i v1=[v11, v12] To count the eigenvector we solve an homogenous system of equations. Because we...

2 Answers · Science & Mathematics · 27/03/2013

9. ### question number 14 and 15?

...'t work, since dimes are counted in multiples of 10. So, try 10 for...quot;guaranteed investment certificate" and V be the venture capital. *Express ...

1 Answers · Science & Mathematics · 06/03/2013