1. Unregistered

How to find the least common factor?

How to fine Least Common Factor? This is regarding Aptitude Test please help me.....

2. srini Array
Join Date
Jun 2012
Posts
60

Re: How to find the least common factor?

Hi,
A quick and easy method for finding least common multiples.

The least common multiple of two or more non-zero whole numbers is actually the smallest whole number that isdivisible by each of the numbers.
Simply list the multiples of each number (multiply by 2, 3, 4, etc.) Then look for the smallest number that appears in each list.

Example:

Find the least common multiple for 5, 6, and 15.

First we list the multiples of each number.
Multiples of 5 are 10, 15, 20, 25,30, 35, 40,
Multiples of 6 are 12, 18, 24, 30, 36, 42, 48,
Multiples of 15 are30, 45, 60, 75, 90,.
Now, when you look at the list of multiples, you can see that 30 is the smallest number that appears in each list.
Therefore, the least common multiple of
5, 6 and 15 is 30.

3. chrome Array
Join Date
Sep 2012
Posts
20

Re: How to find the least common factor?

dEAR,

Its Simple to do
>> List the multiples of each number.
Take Multiples of 5 are 10, 15, 20, 25, 30, 35, 40,
Similarly Multiples of 6 are 12, 18, 24, 30, 36, 42, 48,
Simple Multiples of 15 are 30, 45, 60, 75, 90,.
Now, when you look at the list of multiples, you can see that 30 is the smallest number that appears in each list.
Therefore, the least common multiple of 5, 6 and 15 is 30.

4. rajpurohitt Array
Join Date
Jul 2012
Posts
528

Re: How to find the least common factor?

Friend,

Finding Least Common Factor is so Simple. It is basement of Mathematics. We all Lear this in 5th/6th Class.

Here is the Steps for Least Common Factor :-

Steps:

Step 1 : Count the number of times each prime number appears in each of the factorizations.
Step 2 : For each prime number, take the largest of these counts.
Step 3 : Write down that prime number as many times as you counted for it in step 2.
Step 4 : The least common multiple is the product of all the prime numbers written down.

For more :

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