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Sum

42 × 8 divisible by 4?

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#### Solution

42×8 is divisible by 4

⇒ 4 + 2 + x + 8 is a multiple of 2

⇒ 14 + x = 0, 2, 4, 6, 8,

⇒ x = -8, -6, -4, -2, 2, 4, 6, 8,

Since, x is a digit 2, 4, 6, 8

Concept: Tests for Divisibility of Numbers - Divisibility by 4

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