Question

find the ratio of hcf and lcm of the numbers 18 and 30​

Answer 1

Answer:

hy here is ur answer

Step-by-step explanation:

HCF =6

LCM =90

The ratio of the HCF and LCM is 1:15

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Answer 2

Answer:

The ratio of HCF and LCM of the numbers 18 and 30 is $1:15$.

Step-by-step explanation:

HCF (Highest Common Factor): The greatest number that divides the each of the two or more numbers is known as the highest common factor.

LCM (Least Common Multiple): Multiples of two or more given numbers is known as least common multiples or factors.

Step 1 of 3

Consider the numbers as follows:

18, 30

Factorisation of the number 18,

$18=2\times 3\times3$

Factorisation of the number 30,

$30=2\times3\times5$

Thus, the LCM of the numbers 18 and 30 is,

= $2\times3\times3\times5$

= 90

Step 2 of 3

All the divisors of the number 18 are,

$1,2,3,6,9,18$

All the divisors of the number 30 are,

$1,2,3,5,6,10,15,30$

Observe that the number $6$ is the highest divisor of both the numbers 18 and 30.

Thus, the HCF of the numbers 18 and 30 is 6.

Step 3 of 3

Ratio = HCF/LCM

        = 6/90

        = 1/15

Therefore, the ratio of HCF and LCM of the numbers 18 and 30 is $1:15$.

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