Find the least value of * for which 5967 * 13 is divisible by 3.
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Answer:
For a number to be divisible by 3, the sum of all the digits of the number should be divisible by 3.
Thus, sum of digits of given number is:
5+9+6+7+*+1+3 = 31+*
The nearest (+) number to 31 to be divisible by 3 is 33
=> 31 + * = 33
=> * = 33-31
=> * = 2
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