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What least value must be assigned to ‘*’ so that the number 451 * 603 is exactly divisible by 9?
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- 7
- 8
- 5
- 9
Correct Option: B
If the sum of the digits of a number be divisible by 9, the number is divisible by 9.
Sum of the digits of 451 * 603 = 4 + 5 + 1 + * + 6 + 0 + 3
Sum of the digits of 451 * 603 = 19 + *
If * = 8, then 19 + 8 = 27 , which is divisible by 9.
