Maths, Addmaths and Statistics: Post your doubts here!

[Dark Destination]

Thanks for giving me the TITLE (I am credit stealer ) ..... Practise Practise and Practise....
Think before you solve Problems!

No, i didn't give you this title yet. I gave it to amd, because he deserves it for his contribution to this thread.

 

[Asad.Babur]

No, i didn't give you this title yet. I gave it to amd, because he deserves it for his contribution to this thread.

I know, told ya! Credit Stealer

 

[Dark Destination]

I know, told ya! Credit Stealer

But you can get this title too. Just work hard. Go and practice maths.
Once you get really good, tell me and i'll take a test of tough questions from you, and if you pass, you'll be given this title too.

Everyone deserves a chance. That's my rule.

 

[Asad.Babur]

But you can get this title too. Just work hard. Go and practice maths.
Once you get really good, tell me and i'll take a test of tough questions from you, and if you pass, you'll be given this title too.

Everyone deserves a chance. That's my rule.

LOLX! thanks for the Motivations Bro May you get A*

 

[***amd***]

Hello
m new here
Can any one here tell me about varients? i mean is it just okay to solve pastpapers?

for taking examinations Cab university has divided the countries in 6 zones. and there is a different qp for every zone (all qp.s vary from each other) and thus these different exams papers are regarded as variants

 

[***amd***]

How hard is (what fears me) Pythagoras Theorem is ?

its just NOTHING one should care for. Just a piece of cake, or perhaps easier than that.

 

[Asad.Babur]

its just NOTHING one should care for. Just a piece of cake, or perhaps easier than that.

LOLX! ok!

 

[Asad.Babur]

Find the smallest value of K if
a) 280k is perfect square
b) 882k is cube

A= 70 (Undestood)
B= 84 (Howcome)?

***amd***

 

[***amd***]

***amd***

I'll just teach you how to do part a. ok? b part will be your test for taking the title of Maths Master from me dont worry its gonna be v easy.

ok, so coming to a)
first divide the number 280 into its prime factors.

 

[Asad.Babur]

and

I'll just teach you how to do part a. ok? b part will be your test for taking the title of Maths Master from me dont worry its gonna be v easy.

ok, so coming to a)
first divide the number 280 into its prime factors.

and then multiply them to get

2x7x5 = 70 Done ,........... Tell me B

I can do it like

Factorization = 2 x 3 ^ 2 x 7 ^ 2

Multiply we 42, side of cube. so cube is = 42 * 42* 42= 74088
divide on 882 to get k = 84............


I wanna know is this right way to do?

 

[***amd***]

and

and then multiply them to get

2x7x5 = 70 Done ,........... Tell me B

I can do it like

Factorization = 2 x 3 ^ 2 x 7 ^ 2

Multiply we 42, side of cube. so cube is = 42 * 42* 42= 74088
divide on 882 to get k = 84............


I wanna know is this right way to do?

all i asked you was, to do this
2 * 2 * 2 * 5 * 7 = 280

 

[Awesome12]

all i asked you was, to do this
2 * 2 * 2 * 5 * 7 = 280

oh wait wait
2 * 2 * 2 * 5 * 7 = 280
now i am the maths-master

 

[Asad.Babur]

all i asked you was, to do this
2 * 2 * 2 * 5 * 7 = 280

Lolx Sorry! I know how to do Part a )

I want to confirm Part-B only!

oh wait wait
2 * 2 * 2 * 5 * 7 = 280
now i am the maths-master

Nope, you are nt!

 

[***amd***]

Lolx Sorry! I know how to do Part a )

I want to confirm Part-B only!


Nope, you are nt!

ok, tell me what do u do in part a?

 

[Asad.Babur]

ok, tell me what do u do in part a?

I just multiply Prime Factorization, not including the powers.....
Like in this case
2x5x7

 

[***amd***]

I just multiply Prime Factorization, not including the powers.....
Like in this case
2x5x7

nah wrong.

2 * 2 * 2 * 5 * 7 * k = 280k

when we find the squre root of 2 * 2, itl be ofcourse a single 2.
the same way under-root ( 2* 2 * 2 * 2) = 2 * 2
and underoot (2 * 2 * 2 * 2 * 2 * 2) = 2 * 2 * 2

so if we have 2 * 2 * 2, u need to multiply it with such a number that the total number of 2's becomes even
like, 2 * 2 * 2 * 2 is a proper square root.

the same way underoot(2 * 2 * 2 * 2 * 2 * 2 * 3 * 3 * 11 * 11) = 2 * 2 * 2 * 3 * 11
got it?

so all u need to do is, make the number of all prime factors 'even'
280k = 2 * 2 * 2 * 5 * 7 * k
280 k = 2 * 2 * 2 * 2 * 5 * 5 * 7 * 7

so k = 2 * 5 * 7

but if we had 1400 instead of 280 in the Question. where prime factors of 1400 are 2 * 2 * 2 * 5 * 5 * 7
we only need to to increase the number of all the prime factors which is divisible by 2 (coz we have to find SQUARE root, and if we had to find cube root, we'll increase the number of prime factors so that 'that' number of each of the prime factors is divisible by 3)
so we will do it this way 1400k = 2 * 2 * 2 * 2 * 5 * 5 * 7 * 7
k = 2*7

got it?

 

[Cookie Monster]

http://maxpapers.com/wp-content/uploads/2012/11/4024_w13_qp_21.pdf

Q-8 (part a)
Help me. ._.

 

[***amd***]

http://maxpapers.com/wp-content/uploads/2012/11/4024_w13_qp_21.pdf

Q-8 (part a)
Help me. ._.

Q8...
View attachment 38038
use the Pythagoras theorem and you'll get the answer.

Q10...
View attachment 38039
find the arc length AB (= 90/360 * 2 pie r) and multiply it with the height of the cylinder.

 

[peacce]

for taking examinations Cab university has divided the countries in 6 zones. and there is a different qp for every zone (all qp.s vary from each other) and thus these different exams papers are regarded as variants

so its helpful to solv them

 

[Dream.Eater]

and

and then multiply them to get

2x7x5 = 70 Done ,........... Tell me B

I can do it like

Factorization = 2 x 3 ^ 2 x 7 ^ 2

Multiply we 42, side of cube. so cube is = 42 * 42* 42= 74088
divide on 882 to get k = 84............


I wanna know is this right way to do?

Isnt that my method?