Question

Find the LCM of 4 and 20

Answer 1

4

Answer 2

\[20 = 2 \times 2 \times 5 \]\[ 4 = 2 \times 2\]Does that give a hint?

Answer 3

@trackzz Nope, that'd make the HCF.

Answer 4

woops, yeah you're right.

Answer 5

What is HCF tho?

Answer 6

HCF = GCD

Answer 7

I'm loss, what is GCD?

Answer 8

lost*

Answer 9

\[ \begin{array}{l|r} 2&20,4 \\ \hline 2&10,2\\\hline 2&5,1\\\hline 5&1,1 \end{array}\]\[L.C.M = 2\times2\times2\times 5 \]

Answer 10

@trackzz The highest number that divides both.

Answer 11

The LCM is 2 right? :P

Answer 12

No no.

Answer 13

LCM is the lowest multiple of two numbers.

Answer 14

The common multiples of these numbers are:
20
40
60
80
100
120
140

Answer 15

The least number that you see here is 20. Thus, \(\text{lcm}(20,4) = 20\)

Answer 16

k i need school to start now..

Answer 17

Hahah