Question
If the number 481 * 673 is completely divisible by 9. then the smallest whole number in place of * will be.
Answer: Option D
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Sum of digits = ( 4 + 8 + 1 + `x` + 6 + 7 + 3) = ( 29 + `x`) , which must be divisible by 9.
`therefore` `x` = 7.
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