n is a whole number which when divided by 4 gives 3 as remainder. What will be the remainder when 2*n is divided by 4 ?
Choose the correct answer: A) 8 B) 2 C) 6 D) 7 E) 1
Explanation:   Let n=4*q + 3. Then, 2*n = 8*q + 6 = 4(2*q + 1) + 2.   Thus when 2*n is divided by 4, the reminder is 2.   Answer: 2) 2
<result>B</result>
n is a whole number which when divided by 4 gives 3 as remainder. What will be the remainder when 2*n is divided by 4 ?