| When 'n' is divisible by 5, the remainder is 2. What is the remainder when \[{{n}^{2}}\]divided by 5? |
A) 2
B) 3
C) 1
D) 4
Correct Answer: D
Solution :
| Number \[=5n+2\] |
| So, \[{{(5n+2)}^{2}}=25{{n}^{2}}+10n\times 2+4=25{{n}^{2}}+20n+4\] |
| So, remainder is 4. |
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