Question

please solve this step by step and give reason why it is divisible by 8 and 9​

Answer 1

Test of 8- Last 3 nos have to be divisible by 8. Since 128(last 3 digits) is divisible by 8, therefore 128 is divisible by 8

Test of 9- All digits must sum up to be a multiple of 9. 429714- 4+2+9+7+1+4= 27, which is a multiple of 9 - (9x3=27)

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