Question

replace with the smallest digit to make it 13784 is divisible by 9 . 8, 1, 13​

Answer 1

Answer:

sum of even place => 3+8= 12

sum of odd place=> 1+7+4= 11

difference of even and odd => 12-11= 1

so, we add 1 in the smallest digit to make it divisible by 11

the number comes after adding 1 is

137841

sum of its even digit is 12

sum of its odd digit is 12

difference of its even and odd digit is 0

so it is divisible by 11

137841/11 = 12531

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