Which of the following pairs are coprime numbers

8, 10

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6, 8

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9, 10

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15, 18

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Solution

The correct option is C
9, 10

As HCF of 9 & 10 is 1

Suggest Corrections

Number	$0$	$3$	$6$	$9$	$12$	$15$	$18$
Frequency	$4$	$8$	$9$	$7$	$10$	$3$	$10$

Size of shoe	$4$	$5$	$6$	$7$	$8$	$9$	$10$
No. of pairs sold	$15$	$17$	$13$	$21$	$18$	$16$	$11$