Answer to question 3.
just think a bit and u will get the answer as = 81 +81 =162
(Hint 100, 122, 133, 144,...,199 and same goes for the other 9 figures : 1,2,3, ...,9)
then (110, 112,113,114,...,119 and same goes for the other 9 figures : 1,2,3, ...,9)
Answer to question 2b.
if the balls are of different colour then there are 3! =6 ways in which they can be placed 1 in each box
there are also 3C1 =3 ways in which all the balls go in one box
and finally there are 3C1 X 3C2 X 2C1 =18 ways in which we can choose one box containing 2 ball and...
Answer to question 2a.
If the balls are of the same colour there is only 3C1 = 3 ways in which all of the 3 balls should be in one box.
and there is only 1 way in which 1 ball is in each box (they are of the same colour)
and there are only 3C1 X 2C1 = 6 ways of placing one ball in any of the 3...
your question 1 should be written as:
A candidate sitting this paper is told to answer 5 of the 7 questions in section A, and 3 questions from the 5 options(each option consists of 3 questions) in section B, where not more than 2 questions from the same option can be chosen. Assuming that he...
can anyone please give me an example of how to calculate the homothetic vector field of
say
a Bianchi Type I exact solution of the Einstein field equation
(refer to dynamical systems in cosmology by Wainwright and Ellis chapter 9)
note : I know already how to calculate the...
hint : Wanas and Bakry in a paper entitled " stability of cosmological models"
say : that large scale structures cannot be formed in stable cosmological models.
i just don't agree and i say that their argument is not accurate enough . i think they shoul rather say :
that " large...
to those experts in the field of cosmology
i was wondering if " large scale structures can be formed in stable cosmological models"
or should i say that " large scale structures cannot be formed in those cosmological models that are stable with respect to gravitational or other curvature...