a box contains some balls whose total weight is 40kg. there are 10 balls of weight 1kg each, 5 balls each of weight 2kg, 5 balls of weight 2.5kg and rest of the ball weighting 1.5kg each. a ball is drawn from the box, find the probabilty that the ball is drawn of. (a) weight 2.5kg. (b) weight neither 2.5kg nor 1kg. (c) is not of weight 1.5kg.
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suppose there are x balls having a weight of 1.5 kg each.so x=5 balls.
a)1/5(5/25)
b)3/5(15/25)
c)4/5(20/25)
a)1/5(5/25)
b)3/5(15/25)
c)4/5(20/25)
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