which greatest digit should replace m so that the number 778m09 is divisible by 3
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Step-by-step explanation:
The divisibility rule of 3 is if the sum of the digits if the no. is divisible by 3 then the whole number is divisible by 3
so 7+7+0+8+9+m÷3
31 +m ÷3
to make it divisible by 3 you should add 3 so m=3
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