Question
n is a whole number which when divided by 4 gives 3 as remainder. What will be the remainder when 2n is divided by 4?
Answer: Option B
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Let n = 4q + 3. Then 2n = 8q + 6 = 4(2q + 1) + 2.
Thus. when 2n is divided by 4. the remainder is 2.
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