HCF of two numbers is 1 and LCM is 221. If one of the two numbers is 17, find the other.

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200

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Solution

The correct option is A
13

Let the unknown number be x.
Second number is 17.
Now, HCF $\times$ LCM = product of the two numbers
$\Rightarrow$ $1 \times 221 = 17 \times b$
$\Rightarrow$ b = 13

$∴$ The unknown number is 13.

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