Latest REVENUE OFFICER Aptitude Question SOLUTION: the following tables gives the life time of 500 CFL lamps
Life time : 9,10,11,12,,13,14,more than 14
No of lamp: 26, 71,82,102,89,77,53
total : 500
a bulb is selected at random . t
the following tables gives the life time of 500 CFL lamps
Life time : 9,10,11,12,,13,14,more than 14
No of lamp: 26, 71,82,102,89,77,53
total : 500
a bulb is selected at random . the probabilty that the life time fo the selected bulb is atmost 11 months is given by