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maths problem (Discussion)

Gurudev said – Thu, 25 Jun 2009 18:35:41 -0000 ( Link )

Find the least number of square tiles require to pave the cealing of hall 15m 17 cm long and 9 m 2 cm broad?

Ans 814 ff

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  1. Gurudev said – Thu, 25 Jun 2009 19:16:26 -0000 ( Link )

    Q 2 Find the least no from which 12,18,32,40 may be subracted,each an exact nnumber of times? Ans 1440

    Q3) In a school 391 boys and 323 girls have been dividen into largest possible class,so that each boys no the same as each class of girls.What is the no of class?

    why we find HCF in this case?

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  2. amanpreet055 said – Fri, 26 Jun 2009 05:47:58 -0000 ( Link )

    in the first question isnt it necessary to know the area of a single square…....??????

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  3. amanpreet055 said – Fri, 26 Jun 2009 05:57:53 -0000 ( Link )

    for question no 2 ,,, you have to take the LCM of all the no.. that comes to be 1440….... this is the least commo factor through which all are divisible and hence when multiplied by n they can be completely subtracted…..

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  4. deepa mittal said – Mon, 29 Jun 2009 08:05:23 -0000 ( Link )

    Convert all figures into cms, we get: L = 1517 ; B = 902 cm

    LCM of 1517 and 902 is 33374

    Since we have to use the square tiles, square the number 33374 and you get 1113823876

    Divide this number by total area of the field i.e 1517 * 902 = 1368334

    so, 1113823876/1368334 = 814

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  5. Gurudev said – Tue, 14 Jul 2009 08:56:04 -0000 ( Link )

    @ amanpreet

    thanks alot for your kind support ,book name is m.tyra

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