Question

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Qy In a nine digit no 389x6378y divisible by 72 then the value of √6x+7y​

Answer 1

Answer:

Since the number is divisible by 72, we must check divisibility by 8 and 9 both.

Divisibility by 8- the last three digits should be divisible by 8.

If we put , then it will be divisible by 8.

divisibility by 9- the sum of digits should be divisible by 9.

If we put , it will be divisible by 9.

Required,