Question

Hcf of two numbers is 31 and Lcm
is 3720 and if one of them is 465
then what will be the second number​

Answer 1

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Let the other no. be x.

HCF = 31 , LCM= 3720

Product of two numbers = LCM × HCF

465 × x = 3720 × 31

x = 3720 × 31 / 465

x = 248

Thus other number is 248

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Answer 2

$31 \times 3720 = 465 \times x \\ = > 115320 = 465x \\ = > 115320 \div 465 = x \\ = > 248 = x$

here x is the 2nd number

because HCF*LCM=product of the two numbers