Question 11

The LCM of two numbers is 210. If their HCF is 35 and one of the numbers is 105, find the other number.

Solution

We know that multiplication of two numbers is equal to the multiplication of their LCM and HCF.

Here,LCM=210 and HCF=35 .

Let say ,another number is x.

So,$$210×35=105 × x$$

or,$$x=(210×35)/105=70$$

So, another number is 70.

B is correct choice.

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