The H.C.F and L.C.M of two numbers are 7

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Target Exam

CUET

Subject

General Test

Chapter

Numerical Ability

Question:

The H.C.F and L.C.M of two numbers are 7 and 140 respectively. If these numbers are between 20 and 45 then sum of these number is :

Options:

Correct Answer:

Explanation:

Let two no. are =7a and 7b

⇒ LCM × HCF = Product of two no.

⇒ 7 × 140 = 7a × 7b ⇒ ab = 20

Req. no. are = 7 × 4, 7 × 5 = 28, 35

⸫ Sum = 28 + 35 = 63