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Sum
28×6 a multiple of 3?
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Solution
28×6 is a multiple of 3
2 + 8+ x + 6 is a multiple of 3
=> 16 + x = 0, 3, 6, 9, 12, 15, 18
=> x = -18, -5, -2, 0, 2, 5, 8
Since, x is a digit = 2, 5, 8
Concept: Tests for Divisibility of Numbers - Divisibility by 3
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