Friday, October 26, 2007

L.C.M AND H.C.F

L.C.M AND H.C.F

1.H.C.F of fractions =

[ H.C.F of Numerators/L.C.M of Denominators ]


2.    (i)which will be divided - L.C.M
      (ii)Which divides - H.C.F
3.The greatest number which can divide x, y and z leaving the same     remainder 'A' in each case is X-A = ?, Y-A = ?, Z-A = ? and Find     the H.C.F of obtained      numbers.
4.The greatest number by which if x and y are divided. The     remainder will be A&B respectives is, x.A = ? , y-B = ? Find the     H.C.F of obtained numbers.
5.L.C.M of fractions =

[ L.C.M of Numerators/H.C.F of Denominators ]


6.
[ H.C.F * L.C.M = n1 * n2 ]


7. The least number which when divided by x,y and z leaves the      remainder A,B and C respectively is, x-A = ? , y-B = ? , z-C = ?.      Here, there will be equal difference between them i.e., D.

Required no = [ L.C.M of x,y and z ] - D


8.The smallest number which when diminished by A, is divisible by      p,q,r,s is,

Smallest no = [ (L.C.M of p,q,r,s) + A ]

2 comments:

totapally sharadwi said...
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yuvan said...

Hi, check this for l.c.m and h.c.f aptitude questions and answers with explanation..

infibee.com/general-aptitude/hcf-and-lcm/