Question

find the greatest number which is less by 2 to divide 20,30 and 60 exactly ?​

Answer 1

Step-by-step explanation:

Find the HCF of 20, 30, and 60 and subtract 2 from the HCF.

Hope it helps.

Answer 2

Answer:

The number is 8.

To find:

The greatest number which is less by 2 to divide 20,30 and 60

Solution:

The HCF of 20, 30, 60 is

20 = $2 \times 2 \times 5$

30 = $5 \times 3 \times 2$

60 =$2 \times 2 \times 3 \times 5$

HCF is the Highest Common Factor, hence the common multiples are 2 and 5,

HCF = $2 \times 5 = 10$

Result:

The number = 10 – 2 = 8