Answers

2015-01-02T15:31:04+05:30
1) total no of launching attempts
    PSLV-71
     GSLV - 8
⇒79
2)sucess rate of pslv 92.86%
    failure rate -1%
3)sucess rate of gslv-80%
   failure rate - 1%
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2015-01-06T21:17:19+05:30
Total no of attempts 
pslv-71
gspl-8
sucess rate of gsvl is 92.86%
and sucess rate of psvl is -80%
faliure % of gsvl is 7.14%
and faliure % of psvl is -20%
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