answersLogoWhite

0


Best Answer

To find the LCM of a set of numbers you first need to break those numbers down into their prime factors. In this case:

980 = 2x2x5x7x7

100 = 2x2x5x5

2450 = 2x5x5x7x7

140 = 2x2x5x7

The next step is to identify any common prime factors between the numbers, and only count them once. In this case, all numbers contain one 2 and one 5, so 3 of each can be dismissed. Two numbers also contain a second 5 so one of these can be dismissed. Three numbers contain a second 2 so 2 of these can be dismissed. 3 numbers contain a 7, so 2 of these can be dismissed, and two numbers contain a second 7 so 1 of these can be dismissed.

We are left with:

2,2,5,5,7,7

Multiplying these together we get 4,900

So the LCM of 980, 100, 2450 and 140 is 4,900

User Avatar

Wiki User

13y ago

Still curious? Ask our experts.

Chat with our AI personalities

BeauBeau
You're doing better than you think!
Chat with Beau
BlakeBlake
As your older brother, I've been where you are—maybe not exactly, but close enough.
Chat with Blake
SteveSteve
Knowledge is a journey, you know? We'll get there.
Chat with Steve

Add your answer:

Earn +20 pts
Q: What is the LCM of 980 100 2450 140?
Write your answer...
Submit
Still have questions?
magnify glass
imp