Qualification > Math
Freaky question........:P
Freaked12:
If Alpha read that post, why has she banned herself? :P
She doesnt trust her self yet
Anyway
you need to get the multiples of the number
then see what multiply need a second one to give you two sets of identical multiples
722=2*19*19
so you need the second 2 to get two sets of multiples
(2*19)(2*19)
p.s. if you could see 19 was the square root of 361 without a calculator, your brain works better than mine
Deadly_king:
--- Quote from: Jump! on October 01, 2010, 10:12:39 pm ---Okay okay. That wasn't me ::)
I wouldn't be able to answer such a question.
It was your lovely Mauritius friend Alpha who Facebook messaged me the answer to reply to you. +Rep her, not me (:
--- End quote ---
Ooh.........alright then.
Yeah......I know she's pretty busy with her exams and all that. Thank You Alpha :)
I know you're going to see this post :P
But Requiem has a point there.............it's not something we know by heart.......I mean 19*19=361.
Manually it takes a whole lot of time ;)
Nope Requiem........Alpha has full confidence in herself. Am pretty sure about that but sometimes you need not take too much risks :P
Ukhti-R:
And about finding the square root of 361:
We know 15*15= 225 and 20*20= 400. We'll use them as landmarks.
Therefore, 15 < ./ 361 < 20
Possibilities: 16, 17, 18, 19.
An even number is one which can be divided by 2 => any number multiplied by an even number will necessarily give an even number.
From the above, we can eliminate 16 and 18 since 361 is odd.
7*7 will give 49, 361 ends with 1, so 17 cannot be the required number. 9*9 gives 81, it corresponds to 361.
Conclusion reached by logical procedures, which means you need not know the multiplications by heart. But you sure need a good brain. ;)
N.B ./ is used for the root sign.
;D
AND ROXY STRIKES AGAIN :P
Hope I answered your question with my amazing math skills :)
Deadly_king:
--- Quote from: Jump! on October 02, 2010, 04:25:31 pm ---And about finding the square root of 361:
We know 15*15= 225 and 20*20= 400. We'll use them as landmarks.
Therefore, 15 < ./ 361 < 20
Possibilities: 16, 17, 18, 19.
An even number is one which can be divided by 2 => any number multiplied by an even number will necessarily give an even number.
From the above, we can eliminate 16 and 18 since 361 is odd.
7*7 will give 49, 361 ends with 1, so 17 cannot be the required number. 9*9 gives 81, it corresponds to 361.
Conclusion reached by logical procedures, which means you need not know the multiplications by heart. But you sure need a good brain. ;)
N.B ./ is used for the root sign.
;D
AND ROXY STRIKES AGAIN :P
Hope I answered your question with my amazing math skills :)
--- End quote ---
hehe.....this explanation is much clearer :)
Indeed you have undoubted skills........but who must I +rep for this one??? :P
Freaked12:
Just +rep Jump man.
For Her awesomeness ;)
-Requiem
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