Question

the hcf and lcm of two numbers are 9and 10 recepectivilly. if the one number is 18 find the other
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Answer 1

Given :-

• LCM of numbers = 10

• HCF of numbers = 9

• 1st Number = 18

To Find :-

• 2nd number

Solution :-

Let's the 2nd number be x

★ LCM × HCF = 1st no. × 2nd no.

⇒ 9 × 10 = 18 × x

⇒ 90 = 18x

⇒ x = 90/18

⇒ 5

2nd number = 5

Answer 2

Given :

• HCF of one number is 9.
• LCM of other number is 10.
• If one number is 18.

To find :

• Other number

According to the question,

⇝ Let the other number be x

⇝ 9 × 10 = 18 × x

⇝ 90 = 18x

⇝ x = 90 ÷ 18

.°. x = 5

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

Verification :

⇝ 9 × 10 = 18 × x

Putting the value of x

⇝ 9 × 10 = 18 × 5

⇝ 90 = 90

.°. L.H.S = R.H.S

Hence,verified...