Answers

2016-01-15T12:44:22+05:30
(200-161)=39............its a easy one 
1 5 1
eeeeee.......................
@lalipapa123 u r an expert.....so u should have point it out easily wat i hav written i think so
yeah but i didn't got sudenly the trick behind it dude
ooooo
ooohhh
2016-01-15T12:47:05+05:30
Mean= sum of observations/ no of observations  
20 =60+20+18+17+22+16+15+20+17+*/10
200= 161*
200/161=*
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