Answers

2015-02-06T20:27:02+05:30
2015-02-06T20:43:48+05:30
Mode is the number which occurs most times, here each number is occurring once, hence u can choose any number as mode...There is a formula for calculating mode 

mode=3median-2mean .... you can use this formula but the numbers go wild! 
Plz mark it as best if it helped!
1 5 1