Question

check the divisibility of 15287 by 3 and 9
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Answer 1

Step-by-step explanation:

a number is divisible by 3 and 9 is their sum is divisible by the number

so the sum of 15287 = 23 which is neither divisible by 3 nor 9

so the number 15287 isn't divisible by 3 nor 9

Answer 2

Step-by-step explanation:

$1 + 5 + 2 + 8 + 7 = 23 \\ it \: is \: not \: divisible \: by \: 3 \: and \: 9. \: \\ since \: 23 \: is \: a \: prime \: number$