given that the number 78b424 is divisible by 4 , where b is a digit . what are the possible values of b ?
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According to the divisibility rule of 4, the last two digits of the number should be divisible by 4 or the number must end with two zeroes.
The last 2 digits of 78b424 are 24, that is divisible by 4. So the number is divisible by 4.
the value of 'b' can be any number between 1 to 9 because the last 2 digits are divisible so there can be any digit here.
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