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#1 Help Me ! » no. of ways of dividing in a couple » 2014-10-15 04:26:53

jacks
Replies: 5

the number of ways of dividing

men and
women into
couples each consisting of a man and a woman is

#3 Help Me ! » No. of arrangement in 4*3 grid » 2014-10-14 19:37:24

jacks
Replies: 2

Total no. of ways by which we can arrange the word

in a
grid such that no same letter occur in each row and now row remain empty.

#4 Help Me ! » no. of ways » 2013-10-13 19:45:04

jacks
Replies: 7

the number of ways of dividing 15 men and 15 women into 15 couples each consisting of a man and a woman is

#5 Re: Help Me ! » no. of path in Grid » 2013-10-13 16:55:01

Thanks Admin and anonimnystefy got it

#6 Re: Help Me ! » calculation of (a,b,c,d) in 34! » 2013-10-13 16:53:39

I have solved (1) one

19! contain factor of 9. so R.H.S must be divisible by 9.

So for divisibility by 9., sum of digit must be divisible by 9.

So

so a = 1 .

But I did not understand how can i solved (ii) one

Thanks

#7 Help Me ! » calculation of (a,b,c,d) in 34! » 2013-10-13 16:47:11

jacks
Replies: 34

(1) If

Then value of
is

(2) If

. Then value of
is

#8 Re: Help Me ! » no. of path in Grid » 2013-09-30 07:33:05

It's the number of paths from A to F times the number of paths from G to B.

To anonimnystefy I did not understand it

why we minus it.

please explain it to me

Thanks

#9 Re: Help Me ! » no. of path in Grid » 2013-09-30 07:24:50

To Admin (Bobbym) i did not understand it

It is just adding up all the paths in the lattice around the missing intersection.

Thanks

#10 Re: Help Me ! » no. of path in Grid » 2013-09-30 07:16:01

To anonimnystefy I have understand 

(Which is Total no. of path from A to B, If There is a connectivity between F to G)

but Did not understand

Would you explain it to me.

Thanks

#12 Re: Help Me ! » complete square. » 2013-09-30 07:01:40

To  friends I have edited by Question.

#14 Re: Help Me ! » no. of path in Grid » 2013-09-30 06:36:07

Thanks Bobbym would you like to explain me to it.

#15 Help Me ! » complete square. » 2013-09-30 06:32:16

jacks
Replies: 4

Integer values of

for which
is a perfect square.

#16 Help Me ! » Differential equation » 2013-09-30 06:31:09

jacks
Replies: 1

How can i solve Differential equation

To anonimnystefy I have edited it.

#17 Re: Help Me ! » counting problem to spell MATH » 2013-09-29 07:04:29

I am Getting 12. To Admin. (bobbym) is it right or not

Thanks

#18 Re: Help Me ! » no. of path in Grid » 2013-09-29 07:02:25

Would you like to explain me analytical answer.

I also tried for that method but could not get it.

(But I like yours Counting method.)

#20 Re: Help Me ! » positive integer ordered pairs (n,r) » 2013-09-29 06:46:32

Thanks Bobbym would you like to explain it to me, Thanks

#21 Help Me ! » Total no. of Triangle,Square and Rectangle » 2013-09-29 06:45:25

jacks
Replies: 2

[1] Calculation of Total no. of Triangles form joining any 3  points in a Given Figure.

[2] Calculation of Total no. of Square form joining any 4 points in a Given Figure.

[2] Calculation of Total no. of Rectangle form joining any 4 points in a Given Figure.

#22 Help Me ! » counting problem to spell MATH » 2013-09-29 06:40:58

jacks
Replies: 10

Starting at the M in the center of the Letter below, you may move Left, Right,Up or Down to anadjoining Letter.

How many Distinct paths can be followed to spell the word MATH

#24 Re: Help Me ! » no. of path in Grid » 2013-09-29 05:37:28

Would you like to explain it to me, Thanks

#25 Help Me ! » positive integer ordered pairs (n,r) » 2013-09-29 05:36:15

jacks
Replies: 5

{A} Total no. of positive integer ordered pairs of

which satisfy

{B} Total no. of positive integer ordered pairs of

which satisfy

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