Aptitude - Numbers - Discussion

Discussion Forum : Numbers - General Questions (Q.No. 69)
69.
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 ?
3
2
1
0
Answer: Option
Explanation:

Let n = 4q + 3. Then 2n = 8q + 6   = 4(2q + 1 ) + 2.

Thus, when 2n is divided by 4, the remainder is 2.

Discussion:
15 comments Page 2 of 2.

Kannan said:   7 years ago
Here;
n reminder is 3.
2n/4=?
substitute n value 3,
2(3)/4=6/4.
6/4=2.

Naina said:   7 years ago
Explain it clearly?

Deepika nair said:   7 years ago
I coulnt understand this concept. Could you please help me?

Janardhan jada said:   5 years ago
I can't understand please explain this step by step.

Tejas said:   5 years ago
If n=19 then 2n = 38.

2n/4=38/4 (here remainder is 2) =19/2 (here remainder is 1).

Why does remainder change for the same fraction? Please explain me.


Post your comments here:

Your comments will be displayed after verification.