Question

Find the HCF and LCM of the following number 1. 84, 108 2. 40,80,120 3. 36,48,72​

Answer 1

Answer:

Step-by-step explanation:In order to find the H.C.F. of numbers containing a decimal point ---

1) Make all the numbers have same number of digits after the decimal point by adding zeroes to the right.

In our case 1.75, 5.60, 7.00

2) Ignore the decimal point and treat the number as a whole.

In our case 175, 560, 700

3) Find the factors of the numbers.

In our case 175 = 5 * 5 * 7 * 1

 

560 = 2 * 2 * 2 * 2 * 5 * 7 * 1

700 = 2 * 2 * 5 * 5 * 7 * 1

4) Find the H.C.F. of the numbers.

In our case 5 * 7 = 35

5) Put the decimal point in the H.C.F. of step 4 so as to have the same number of digits as the numbers had after the decimal point in step 1.

In our case .35 = 0.35

6) The required H.C.F. of 1.75, 5.6, 7 is 0.3