find the odd one out of the following options 15,21,63,81

Dear Student,

Please find below the solution to the asked query:

We have :  15 , 21 , 63 , 81 

All are odd numbers .

And

15 =  3 × 5

21 = 3 × 7

63 =  3 × 21

81 = 3 × 27

All are multiple of " 3 " .

Here we can't find odd number from given numbers : 15 , 21 , 63 , 81

So,

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  • -9
81
  • 1
All the numbers are odd.
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