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Question

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

A

13

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B

39

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C

200

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D

17

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Solution

The correct option is A 13

Let the unknown number be x.
Second number is 17.
Now, HCF × LCM = product of the two numbers
1×221=17×x
17x=221
x=22117
x=13

The unknown number is 13.


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