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Showing posts from June, 2015

L.C.M and H.C.F Shortcuts & Questions For PSC & UPSC Exams

If you are preparing for PSC and UPSC exams, one of the important section in quantitative aptitude is LCM and HCF. If you prepare properly, you can score 100 percent from this part. L.C.M. (Least Common Multiple) is the least non-zero number in common multiples of two or more numbers. H.C.F. (Highest Common Factor) is the highest common factor of two or more numbers which means the biggest number which divides each of them exactly.

Now let us check some interesting facts and formulas which help you to solve any questions asked in competitive exams by Banks, CAT, state and central Governments, etc.

Division Method to Find LCM and HCF

Before going for methods to solve LCM and HCF questions asked in aptitude examinations, let us check the methods to find these values using the division method.

1) Find the LCM of 12, 17, 30 using the division method

| 2| 12 , 17, 30 --------------------- |6, 17, 15 2 | -------------------------------- 3…