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Question
42x8 divisible by 4 ?
42x8 divisible by 4 ?
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Solution
∵ 42x8 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
∵ 42x8 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
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