The product of two numbers is 1250 and their HCF is 25. Find the ratio LCM : HCF.

- 1 :3
- 2 :1
- 1 :2
- 4 :5
- 3 :2

Option 2 : 2 :1

**Solution: **

**Formula Used:**

LCM × HCF = Product of two numbers

Calculations:

LCM = product of numbers/HCF

LCM = 1250/HCF

LCM : HCF = 1250/(HCF)^{2}

⇒ 1250/25^{2} = 2

⇒ 2 : 1

**Hence LCM : HCF = 2 : 1**

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