Question

One book has 84 pages. another book has 210 pages. which is the greatest common factor of the number of pages in the two books?

Answer 1

Answer:

HCF=42.

84=2*42, 210=5*42

One way of solving this type of problem is to break down each number into its factors:

84=2*2*3*7

210=2*3*5*7

Then we write down the factors common to each: 2 3 7 and simply multiply them together: 2*3*7=42.

So 42 is the HCF.

Answer 2

Step-by-step explanation:

LCM of 120 and 144 are 24 and 720 respectively. Note:Fundamental theorem of Arithmetic is also known as unique factorization theorem. In this example, the product of two given numbers 120 and 144 is 17,280.